Home / 14,721.30-20,319.96-9,057.78

Finding the Fourth Proportional to 14,721.30, 20,319.96 and 9,057.78

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Solution

The fourth proportional to 14,721.30, 20,319.96 and 9,057.78 is: 12,502.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,721.30 : 20,319.96 = 9,057.78 : x
  2. Step 2: Convert to fraction form
    14,721.30/20,319.96 = 9,057.78/x
  3. Step 3: Cross multiply
    14,721.30x = 20,319.96 × 9,057.78
  4. Step 4: Simplify right side
    14,721.30x = 184,053,727.29
  5. Step 5: Solve for x
    x = 184,053,727.29/14,721.30
  6. Step 6: Final answer
    x = 12,502.55

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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.