Home / 20,869.83-31,304.76-5,287.44

Finding the Fourth Proportional to 20,869.83, 31,304.76 and 5,287.44

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Solution

The fourth proportional to 20,869.83, 31,304.76 and 5,287.44 is: 7,931.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,869.83 : 31,304.76 = 5,287.44 : x
  2. Step 2: Convert to fraction form
    20,869.83/31,304.76 = 5,287.44/x
  3. Step 3: Cross multiply
    20,869.83x = 31,304.76 × 5,287.44
  4. Step 4: Simplify right side
    20,869.83x = 165,522,040.21
  5. Step 5: Solve for x
    x = 165,522,040.21/20,869.83
  6. Step 6: Final answer
    x = 7,931.16

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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.