Home / 42,214.08-63,279.36-19,988.40

Finding the Fourth Proportional to 42,214.08, 63,279.36 and 19,988.40

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Solution

The fourth proportional to 42,214.08, 63,279.36 and 19,988.40 is: 29,962.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,214.08 : 63,279.36 = 19,988.40 : x
  2. Step 2: Convert to fraction form
    42,214.08/63,279.36 = 19,988.40/x
  3. Step 3: Cross multiply
    42,214.08x = 63,279.36 × 19,988.40
  4. Step 4: Simplify right side
    42,214.08x = 1,264,853,159.42
  5. Step 5: Solve for x
    x = 1,264,853,159.42/42,214.08
  6. Step 6: Final answer
    x = 29,962.83

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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.