Home / 38,121.57-52,607.88-21,126.09

Finding the Fourth Proportional to 38,121.57, 52,607.88 and 21,126.09

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Solution

The fourth proportional to 38,121.57, 52,607.88 and 21,126.09 is: 29,154.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,121.57 : 52,607.88 = 21,126.09 : x
  2. Step 2: Convert to fraction form
    38,121.57/52,607.88 = 21,126.09/x
  3. Step 3: Cross multiply
    38,121.57x = 52,607.88 × 21,126.09
  4. Step 4: Simplify right side
    38,121.57x = 1,111,398,807.59
  5. Step 5: Solve for x
    x = 1,111,398,807.59/38,121.57
  6. Step 6: Final answer
    x = 29,154.07

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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.