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Finding the Fourth Proportional to 14,981.88, 20,679.84 and 9,672.60

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Solution

The fourth proportional to 14,981.88, 20,679.84 and 9,672.60 is: 13,351.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,981.88 : 20,679.84 = 9,672.60 : x
  2. Step 2: Convert to fraction form
    14,981.88/20,679.84 = 9,672.60/x
  3. Step 3: Cross multiply
    14,981.88x = 20,679.84 × 9,672.60
  4. Step 4: Simplify right side
    14,981.88x = 200,027,820.38
  5. Step 5: Solve for x
    x = 200,027,820.38/14,981.88
  6. Step 6: Final answer
    x = 13,351.32

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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.