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Finding the Fourth Proportional to 14,981.60, 20,674.86 and 9,012.12

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Solution

The fourth proportional to 14,981.60, 20,674.86 and 9,012.12 is: 12,436.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,981.60 : 20,674.86 = 9,012.12 : x
  2. Step 2: Convert to fraction form
    14,981.60/20,674.86 = 9,012.12/x
  3. Step 3: Cross multiply
    14,981.60x = 20,674.86 × 9,012.12
  4. Step 4: Simplify right side
    14,981.60x = 186,324,319.30
  5. Step 5: Solve for x
    x = 186,324,319.30/14,981.60
  6. Step 6: Final answer
    x = 12,436.88

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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.