Home / 13,117.32-18,102.48-7,148.76

Finding the Fourth Proportional to 13,117.32, 18,102.48 and 7,148.76

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Solution

The fourth proportional to 13,117.32, 18,102.48 and 7,148.76 is: 9,865.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,117.32 : 18,102.48 = 7,148.76 : x
  2. Step 2: Convert to fraction form
    13,117.32/18,102.48 = 7,148.76/x
  3. Step 3: Cross multiply
    13,117.32x = 18,102.48 × 7,148.76
  4. Step 4: Simplify right side
    13,117.32x = 129,410,284.92
  5. Step 5: Solve for x
    x = 129,410,284.92/13,117.32
  6. Step 6: Final answer
    x = 9,865.60

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Find fourth proportional to 6,558.66, 9,051.24 and 3,574.38
Half scale
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Double scale
Find fourth proportional to 13,118.32, 18,103.86 and 7,149.76
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.