Home / 38,502.27-53,129.30-21,503.81

Finding the Fourth Proportional to 38,502.27, 53,129.30 and 21,503.81

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Solution

The fourth proportional to 38,502.27, 53,129.30 and 21,503.81 is: 29,673.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,502.27 : 53,129.30 = 21,503.81 : x
  2. Step 2: Convert to fraction form
    38,502.27/53,129.30 = 21,503.81/x
  3. Step 3: Cross multiply
    38,502.27x = 53,129.30 × 21,503.81
  4. Step 4: Simplify right side
    38,502.27x = 1,142,481,999.47
  5. Step 5: Solve for x
    x = 1,142,481,999.47/38,502.27
  6. Step 6: Final answer
    x = 29,673.11

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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.