Home / 13,249.40-18,276.56-8,272.76

Finding the Fourth Proportional to 13,249.40, 18,276.56 and 8,272.76

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Solution

The fourth proportional to 13,249.40, 18,276.56 and 8,272.76 is: 11,411.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,249.40 : 18,276.56 = 8,272.76 : x
  2. Step 2: Convert to fraction form
    13,249.40/18,276.56 = 8,272.76/x
  3. Step 3: Cross multiply
    13,249.40x = 18,276.56 × 8,272.76
  4. Step 4: Simplify right side
    13,249.40x = 151,197,594.51
  5. Step 5: Solve for x
    x = 151,197,594.51/13,249.40
  6. Step 6: Final answer
    x = 11,411.66

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Find fourth proportional to 6,624.70, 9,138.28 and 4,136.38
Half scale
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Double scale
Find fourth proportional to 13,250.40, 18,277.94 and 8,273.76
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.