Home / 20,715.17-31,050.40-10,172.93

Finding the Fourth Proportional to 20,715.17, 31,050.40 and 10,172.93

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Solution

The fourth proportional to 20,715.17, 31,050.40 and 10,172.93 is: 15,248.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,715.17 : 31,050.40 = 10,172.93 : x
  2. Step 2: Convert to fraction form
    20,715.17/31,050.40 = 10,172.93/x
  3. Step 3: Cross multiply
    20,715.17x = 31,050.40 × 10,172.93
  4. Step 4: Simplify right side
    20,715.17x = 315,873,545.67
  5. Step 5: Solve for x
    x = 315,873,545.67/20,715.17
  6. Step 6: Final answer
    x = 15,248.42

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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.