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Finding the Fourth Proportional to 14,680.80, 20,266.80 and 9,967.20

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Solution

The fourth proportional to 14,680.80, 20,266.80 and 9,967.20 is: 13,759.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,680.80 : 20,266.80 = 9,967.20 : x
  2. Step 2: Convert to fraction form
    14,680.80/20,266.80 = 9,967.20/x
  3. Step 3: Cross multiply
    14,680.80x = 20,266.80 × 9,967.20
  4. Step 4: Simplify right side
    14,680.80x = 202,003,248.96
  5. Step 5: Solve for x
    x = 202,003,248.96/14,680.80
  6. Step 6: Final answer
    x = 13,759.69

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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.