Home / 20,490.80-28,276.92-12,532.44

Finding the Fourth Proportional to 20,490.80, 28,276.92 and 12,532.44

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Solution

The fourth proportional to 20,490.80, 28,276.92 and 12,532.44 is: 17,294.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,490.80 : 28,276.92 = 12,532.44 : x
  2. Step 2: Convert to fraction form
    20,490.80/28,276.92 = 12,532.44/x
  3. Step 3: Cross multiply
    20,490.80x = 28,276.92 × 12,532.44
  4. Step 4: Simplify right side
    20,490.80x = 354,378,803.28
  5. Step 5: Solve for x
    x = 354,378,803.28/20,490.80
  6. Step 6: Final answer
    x = 17,294.53

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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.