Home / 13,696.91-20,545.52-4,931.90

Finding the Fourth Proportional to 13,696.91, 20,545.52 and 4,931.90

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Solution

The fourth proportional to 13,696.91, 20,545.52 and 4,931.90 is: 7,397.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,696.91 : 20,545.52 = 4,931.90 : x
  2. Step 2: Convert to fraction form
    13,696.91/20,545.52 = 4,931.90/x
  3. Step 3: Cross multiply
    13,696.91x = 20,545.52 × 4,931.90
  4. Step 4: Simplify right side
    13,696.91x = 101,328,399.75
  5. Step 5: Solve for x
    x = 101,328,399.75/13,696.91
  6. Step 6: Final answer
    x = 7,397.90

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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.