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Finding the Fourth Proportional to 14,967.88, 20,655.42 and 8,253.50

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Solution

The fourth proportional to 14,967.88, 20,655.42 and 8,253.50 is: 11,389.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,967.88 : 20,655.42 = 8,253.50 : x
  2. Step 2: Convert to fraction form
    14,967.88/20,655.42 = 8,253.50/x
  3. Step 3: Cross multiply
    14,967.88x = 20,655.42 × 8,253.50
  4. Step 4: Simplify right side
    14,967.88x = 170,479,508.97
  5. Step 5: Solve for x
    x = 170,479,508.97/14,967.88
  6. Step 6: Final answer
    x = 11,389.69

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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.