Home / 20,717.42-31,080.76-7,569.45

Finding the Fourth Proportional to 20,717.42, 31,080.76 and 7,569.45

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Solution

The fourth proportional to 20,717.42, 31,080.76 and 7,569.45 is: 11,355.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,717.42 : 31,080.76 = 7,569.45 : x
  2. Step 2: Convert to fraction form
    20,717.42/31,080.76 = 7,569.45/x
  3. Step 3: Cross multiply
    20,717.42x = 31,080.76 × 7,569.45
  4. Step 4: Simplify right side
    20,717.42x = 235,264,282.44
  5. Step 5: Solve for x
    x = 235,264,282.44/20,717.42
  6. Step 6: Final answer
    x = 11,355.87

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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.