Home / 20,280.62-30,391.77-8,577.74

Finding the Fourth Proportional to 20,280.62, 30,391.77 and 8,577.74

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Solution

The fourth proportional to 20,280.62, 30,391.77 and 8,577.74 is: 12,854.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,280.62 : 30,391.77 = 8,577.74 : x
  2. Step 2: Convert to fraction form
    20,280.62/30,391.77 = 8,577.74/x
  3. Step 3: Cross multiply
    20,280.62x = 30,391.77 × 8,577.74
  4. Step 4: Simplify right side
    20,280.62x = 260,692,701.20
  5. Step 5: Solve for x
    x = 260,692,701.20/20,280.62
  6. Step 6: Final answer
    x = 12,854.28

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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.