Home / 42,219.28-63,346.35-18,514.55

Finding the Fourth Proportional to 42,219.28, 63,346.35 and 18,514.55

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Solution

The fourth proportional to 42,219.28, 63,346.35 and 18,514.55 is: 27,779.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,219.28 : 63,346.35 = 18,514.55 : x
  2. Step 2: Convert to fraction form
    42,219.28/63,346.35 = 18,514.55/x
  3. Step 3: Cross multiply
    42,219.28x = 63,346.35 × 18,514.55
  4. Step 4: Simplify right side
    42,219.28x = 1,172,829,164.39
  5. Step 5: Solve for x
    x = 1,172,829,164.39/42,219.28
  6. Step 6: Final answer
    x = 27,779.47

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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.