Home / 20,974.95-31,462.17-8,491.59

Finding the Fourth Proportional to 20,974.95, 31,462.17 and 8,491.59

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Solution

The fourth proportional to 20,974.95, 31,462.17 and 8,491.59 is: 12,737.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,974.95 : 31,462.17 = 8,491.59 : x
  2. Step 2: Convert to fraction form
    20,974.95/31,462.17 = 8,491.59/x
  3. Step 3: Cross multiply
    20,974.95x = 31,462.17 × 8,491.59
  4. Step 4: Simplify right side
    20,974.95x = 267,163,848.15
  5. Step 5: Solve for x
    x = 267,163,848.15/20,974.95
  6. Step 6: Final answer
    x = 12,737.28

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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.