Home / 38,423.30-53,024.42-21,428.62

Finding the Fourth Proportional to 38,423.30, 53,024.42 and 21,428.62

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Solution

The fourth proportional to 38,423.30, 53,024.42 and 21,428.62 is: 29,571.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,423.30 : 53,024.42 = 21,428.62 : x
  2. Step 2: Convert to fraction form
    38,423.30/53,024.42 = 21,428.62/x
  3. Step 3: Cross multiply
    38,423.30x = 53,024.42 × 21,428.62
  4. Step 4: Simplify right side
    38,423.30x = 1,136,240,067.91
  5. Step 5: Solve for x
    x = 1,136,240,067.91/38,423.30
  6. Step 6: Final answer
    x = 29,571.65

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Half scale
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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.