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Finding the Fourth Proportional to 14,651.28, 20,220.71 and 8,984.86

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Solution

The fourth proportional to 14,651.28, 20,220.71 and 8,984.86 is: 12,400.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,651.28 : 20,220.71 = 8,984.86 : x
  2. Step 2: Convert to fraction form
    14,651.28/20,220.71 = 8,984.86/x
  3. Step 3: Cross multiply
    14,651.28x = 20,220.71 × 8,984.86
  4. Step 4: Simplify right side
    14,651.28x = 181,680,152.97
  5. Step 5: Solve for x
    x = 181,680,152.97/14,651.28
  6. Step 6: Final answer
    x = 12,400.29

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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.