Home / 38,423.04-53,024.08-21,428.38

Finding the Fourth Proportional to 38,423.04, 53,024.08 and 21,428.38

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Solution

The fourth proportional to 38,423.04, 53,024.08 and 21,428.38 is: 29,571.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,423.04 : 53,024.08 = 21,428.38 : x
  2. Step 2: Convert to fraction form
    38,423.04/53,024.08 = 21,428.38/x
  3. Step 3: Cross multiply
    38,423.04x = 53,024.08 × 21,428.38
  4. Step 4: Simplify right side
    38,423.04x = 1,136,220,135.39
  5. Step 5: Solve for x
    x = 1,136,220,135.39/38,423.04
  6. Step 6: Final answer
    x = 29,571.32

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Half scale
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Double scale
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Similar ratio
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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.