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Finding the Fourth Proportional to 14,781, 20,397.60 and 8,492.88

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Solution

The fourth proportional to 14,781, 20,397.60 and 8,492.88 is: 11,720.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,781 : 20,397.60 = 8,492.88 : x
  2. Step 2: Convert to fraction form
    14,781/20,397.60 = 8,492.88/x
  3. Step 3: Cross multiply
    14,781x = 20,397.60 × 8,492.88
  4. Step 4: Simplify right side
    14,781x = 173,234,369.09
  5. Step 5: Solve for x
    x = 173,234,369.09/14,781
  6. Step 6: Final answer
    x = 11,720.07

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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.