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Finding the Fourth Proportional to 14,687.93, 20,267.42 and 8,314.85

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Solution

The fourth proportional to 14,687.93, 20,267.42 and 8,314.85 is: 11,473.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,687.93 : 20,267.42 = 8,314.85 : x
  2. Step 2: Convert to fraction form
    14,687.93/20,267.42 = 8,314.85/x
  3. Step 3: Cross multiply
    14,687.93x = 20,267.42 × 8,314.85
  4. Step 4: Simplify right side
    14,687.93x = 168,520,566.28
  5. Step 5: Solve for x
    x = 168,520,566.28/14,687.93
  6. Step 6: Final answer
    x = 11,473.40

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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.