Home / 20,711.90-28,585.24-12,327.50

Finding the Fourth Proportional to 20,711.90, 28,585.24 and 12,327.50

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Solution

The fourth proportional to 20,711.90, 28,585.24 and 12,327.50 is: 17,013.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,711.90 : 28,585.24 = 12,327.50 : x
  2. Step 2: Convert to fraction form
    20,711.90/28,585.24 = 12,327.50/x
  3. Step 3: Cross multiply
    20,711.90x = 28,585.24 × 12,327.50
  4. Step 4: Simplify right side
    20,711.90x = 352,384,546.10
  5. Step 5: Solve for x
    x = 352,384,546.10/20,711.90
  6. Step 6: Final answer
    x = 17,013.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.