Home / 20,737.66-28,617.70-12,239.76

Finding the Fourth Proportional to 20,737.66, 28,617.70 and 12,239.76

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Solution

The fourth proportional to 20,737.66, 28,617.70 and 12,239.76 is: 16,890.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,737.66 : 28,617.70 = 12,239.76 : x
  2. Step 2: Convert to fraction form
    20,737.66/28,617.70 = 12,239.76/x
  3. Step 3: Cross multiply
    20,737.66x = 28,617.70 × 12,239.76
  4. Step 4: Simplify right side
    20,737.66x = 350,273,779.75
  5. Step 5: Solve for x
    x = 350,273,779.75/20,737.66
  6. Step 6: Final answer
    x = 16,890.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.