Home / 12,998.28-17,938.69-7,332.74

Finding the Fourth Proportional to 12,998.28, 17,938.69 and 7,332.74

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Solution

The fourth proportional to 12,998.28, 17,938.69 and 7,332.74 is: 10,119.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,998.28 : 17,938.69 = 7,332.74 : x
  2. Step 2: Convert to fraction form
    12,998.28/17,938.69 = 7,332.74/x
  3. Step 3: Cross multiply
    12,998.28x = 17,938.69 × 7,332.74
  4. Step 4: Simplify right side
    12,998.28x = 131,539,641.69
  5. Step 5: Solve for x
    x = 131,539,641.69/12,998.28
  6. Step 6: Final answer
    x = 10,119.77

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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.