Home / 42,106.72-63,149.28-12,516.88

Finding the Fourth Proportional to 42,106.72, 63,149.28 and 12,516.88

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Solution

The fourth proportional to 42,106.72, 63,149.28 and 12,516.88 is: 18,772.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,106.72 : 63,149.28 = 12,516.88 : x
  2. Step 2: Convert to fraction form
    42,106.72/63,149.28 = 12,516.88/x
  3. Step 3: Cross multiply
    42,106.72x = 63,149.28 × 12,516.88
  4. Step 4: Simplify right side
    42,106.72x = 790,431,959.85
  5. Step 5: Solve for x
    x = 790,431,959.85/42,106.72
  6. Step 6: Final answer
    x = 18,772.11

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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.