Home / 15,398.28-21,248.82-8,683.92

Finding the Fourth Proportional to 15,398.28, 21,248.82 and 8,683.92

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Solution

The fourth proportional to 15,398.28, 21,248.82 and 8,683.92 is: 11,983.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,398.28 : 21,248.82 = 8,683.92 : x
  2. Step 2: Convert to fraction form
    15,398.28/21,248.82 = 8,683.92/x
  3. Step 3: Cross multiply
    15,398.28x = 21,248.82 × 8,683.92
  4. Step 4: Simplify right side
    15,398.28x = 184,523,052.97
  5. Step 5: Solve for x
    x = 184,523,052.97/15,398.28
  6. Step 6: Final answer
    x = 11,983.35

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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.