Home / 42,278.01-63,397.90-12,690.06

Finding the Fourth Proportional to 42,278.01, 63,397.90 and 12,690.06

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Solution

The fourth proportional to 42,278.01, 63,397.90 and 12,690.06 is: 19,029.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,278.01 : 63,397.90 = 12,690.06 : x
  2. Step 2: Convert to fraction form
    42,278.01/63,397.90 = 12,690.06/x
  3. Step 3: Cross multiply
    42,278.01x = 63,397.90 × 12,690.06
  4. Step 4: Simplify right side
    42,278.01x = 804,523,154.87
  5. Step 5: Solve for x
    x = 804,523,154.87/42,278.01
  6. Step 6: Final answer
    x = 19,029.35

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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.