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Finding the Fourth Proportional to 14,751.40, 20,355.78 and 8,462.44

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Solution

The fourth proportional to 14,751.40, 20,355.78 and 8,462.44 is: 11,677.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,751.40 : 20,355.78 = 8,462.44 : x
  2. Step 2: Convert to fraction form
    14,751.40/20,355.78 = 8,462.44/x
  3. Step 3: Cross multiply
    14,751.40x = 20,355.78 × 8,462.44
  4. Step 4: Simplify right side
    14,751.40x = 172,259,566.90
  5. Step 5: Solve for x
    x = 172,259,566.90/14,751.40
  6. Step 6: Final answer
    x = 11,677.51

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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.