Home / 38,502.86-53,136.68-21,509.96

Finding the Fourth Proportional to 38,502.86, 53,136.68 and 21,509.96

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Solution

The fourth proportional to 38,502.86, 53,136.68 and 21,509.96 is: 29,685.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,502.86 : 53,136.68 = 21,509.96 : x
  2. Step 2: Convert to fraction form
    38,502.86/53,136.68 = 21,509.96/x
  3. Step 3: Cross multiply
    38,502.86x = 53,136.68 × 21,509.96
  4. Step 4: Simplify right side
    38,502.86x = 1,142,967,488.10
  5. Step 5: Solve for x
    x = 1,142,967,488.10/38,502.86
  6. Step 6: Final answer
    x = 29,685.27

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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.