Home / 13,236.40-18,266.15-7,186.76

Finding the Fourth Proportional to 13,236.40, 18,266.15 and 7,186.76

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Solution

The fourth proportional to 13,236.40, 18,266.15 and 7,186.76 is: 9,917.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,236.40 : 18,266.15 = 7,186.76 : x
  2. Step 2: Convert to fraction form
    13,236.40/18,266.15 = 7,186.76/x
  3. Step 3: Cross multiply
    13,236.40x = 18,266.15 × 7,186.76
  4. Step 4: Simplify right side
    13,236.40x = 131,274,436.17
  5. Step 5: Solve for x
    x = 131,274,436.17/13,236.40
  6. Step 6: Final answer
    x = 9,917.68

Related Problems

Find fourth proportional to 6,618.20, 9,133.08 and 3,593.38
Half scale
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Double scale
Find fourth proportional to 13,237.40, 18,267.53 and 7,187.76
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.