Home / 38,654.55-53,331.12-21,656.49

Finding the Fourth Proportional to 38,654.55, 53,331.12 and 21,656.49

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Solution

The fourth proportional to 38,654.55, 53,331.12 and 21,656.49 is: 29,879.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,654.55 : 53,331.12 = 21,656.49 : x
  2. Step 2: Convert to fraction form
    38,654.55/53,331.12 = 21,656.49/x
  3. Step 3: Cross multiply
    38,654.55x = 53,331.12 × 21,656.49
  4. Step 4: Simplify right side
    38,654.55x = 1,154,964,866.97
  5. Step 5: Solve for x
    x = 1,154,964,866.97/38,654.55
  6. Step 6: Final answer
    x = 29,879.14

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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.