Home / 15,350.54-21,186.30-9,688.38

Finding the Fourth Proportional to 15,350.54, 21,186.30 and 9,688.38

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Solution

The fourth proportional to 15,350.54, 21,186.30 and 9,688.38 is: 13,371.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,350.54 : 21,186.30 = 9,688.38 : x
  2. Step 2: Convert to fraction form
    15,350.54/21,186.30 = 9,688.38/x
  3. Step 3: Cross multiply
    15,350.54x = 21,186.30 × 9,688.38
  4. Step 4: Simplify right side
    15,350.54x = 205,260,876.75
  5. Step 5: Solve for x
    x = 205,260,876.75/15,350.54
  6. Step 6: Final answer
    x = 13,371.57

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Half scale
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Double scale
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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.