Home / 12,778.10-19,167.15-4,013.90

Finding the Fourth Proportional to 12,778.10, 19,167.15 and 4,013.90

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Solution

The fourth proportional to 12,778.10, 19,167.15 and 4,013.90 is: 6,020.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,778.10 : 19,167.15 = 4,013.90 : x
  2. Step 2: Convert to fraction form
    12,778.10/19,167.15 = 4,013.90/x
  3. Step 3: Cross multiply
    12,778.10x = 19,167.15 × 4,013.90
  4. Step 4: Simplify right side
    12,778.10x = 76,935,023.39
  5. Step 5: Solve for x
    x = 76,935,023.39/12,778.10
  6. Step 6: Final answer
    x = 6,020.85

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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.