Home / 42,654.50-63,896.09-21,242.71

Finding the Fourth Proportional to 42,654.50, 63,896.09 and 21,242.71

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Solution

The fourth proportional to 42,654.50, 63,896.09 and 21,242.71 is: 31,821.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,654.50 : 63,896.09 = 21,242.71 : x
  2. Step 2: Convert to fraction form
    42,654.50/63,896.09 = 21,242.71/x
  3. Step 3: Cross multiply
    42,654.50x = 63,896.09 × 21,242.71
  4. Step 4: Simplify right side
    42,654.50x = 1,357,325,843.74
  5. Step 5: Solve for x
    x = 1,357,325,843.74/42,654.50
  6. Step 6: Final answer
    x = 31,821.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.