Home / 20,589.80-28,411.62-15,002.60

Finding the Fourth Proportional to 20,589.80, 28,411.62 and 15,002.60

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Solution

The fourth proportional to 20,589.80, 28,411.62 and 15,002.60 is: 20,701.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,589.80 : 28,411.62 = 15,002.60 : x
  2. Step 2: Convert to fraction form
    20,589.80/28,411.62 = 15,002.60/x
  3. Step 3: Cross multiply
    20,589.80x = 28,411.62 × 15,002.60
  4. Step 4: Simplify right side
    20,589.80x = 426,248,170.21
  5. Step 5: Solve for x
    x = 426,248,170.21/20,589.80
  6. Step 6: Final answer
    x = 20,701.91

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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.