Home / 42,278.40-63,417.60-21,542.40

Finding the Fourth Proportional to 42,278.40, 63,417.60 and 21,542.40

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Solution

The fourth proportional to 42,278.40, 63,417.60 and 21,542.40 is: 32,313.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,278.40 : 63,417.60 = 21,542.40 : x
  2. Step 2: Convert to fraction form
    42,278.40/63,417.60 = 21,542.40/x
  3. Step 3: Cross multiply
    42,278.40x = 63,417.60 × 21,542.40
  4. Step 4: Simplify right side
    42,278.40x = 1,366,167,306.24
  5. Step 5: Solve for x
    x = 1,366,167,306.24/42,278.40
  6. Step 6: Final answer
    x = 32,313.60

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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.