Home / 14,872.13-20,520.32-8,580.86

Finding the Fourth Proportional to 14,872.13, 20,520.32 and 8,580.86

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Solution

The fourth proportional to 14,872.13, 20,520.32 and 8,580.86 is: 11,839.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,872.13 : 20,520.32 = 8,580.86 : x
  2. Step 2: Convert to fraction form
    14,872.13/20,520.32 = 8,580.86/x
  3. Step 3: Cross multiply
    14,872.13x = 20,520.32 × 8,580.86
  4. Step 4: Simplify right side
    14,872.13x = 176,081,847.57
  5. Step 5: Solve for x
    x = 176,081,847.57/14,872.13
  6. Step 6: Final answer
    x = 11,839.72

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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.