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Finding the Fourth Proportional to 14,604.88, 20,154.72 and 7,980.88

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Solution

The fourth proportional to 14,604.88, 20,154.72 and 7,980.88 is: 11,013.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,604.88 : 20,154.72 = 7,980.88 : x
  2. Step 2: Convert to fraction form
    14,604.88/20,154.72 = 7,980.88/x
  3. Step 3: Cross multiply
    14,604.88x = 20,154.72 × 7,980.88
  4. Step 4: Simplify right side
    14,604.88x = 160,852,401.75
  5. Step 5: Solve for x
    x = 160,852,401.75/14,604.88
  6. Step 6: Final answer
    x = 11,013.61

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Similar ratio
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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.