Home / 20,644.33-28,500.99-13,591.25

Finding the Fourth Proportional to 20,644.33, 28,500.99 and 13,591.25

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Solution

The fourth proportional to 20,644.33, 28,500.99 and 13,591.25 is: 18,763.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,644.33 : 28,500.99 = 13,591.25 : x
  2. Step 2: Convert to fraction form
    20,644.33/28,500.99 = 13,591.25/x
  3. Step 3: Cross multiply
    20,644.33x = 28,500.99 × 13,591.25
  4. Step 4: Simplify right side
    20,644.33x = 387,364,080.34
  5. Step 5: Solve for x
    x = 387,364,080.34/20,644.33
  6. Step 6: Final answer
    x = 18,763.70

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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.