Home / 20,882.60-31,323.90-11,551.40

Finding the Fourth Proportional to 20,882.60, 31,323.90 and 11,551.40

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Solution

The fourth proportional to 20,882.60, 31,323.90 and 11,551.40 is: 17,327.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,882.60 : 31,323.90 = 11,551.40 : x
  2. Step 2: Convert to fraction form
    20,882.60/31,323.90 = 11,551.40/x
  3. Step 3: Cross multiply
    20,882.60x = 31,323.90 × 11,551.40
  4. Step 4: Simplify right side
    20,882.60x = 361,834,898.46
  5. Step 5: Solve for x
    x = 361,834,898.46/20,882.60
  6. Step 6: Final answer
    x = 17,327.10

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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.