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Finding the Fourth Proportional to 31,998.45, 48,006.90 and 9,815.10

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Solution

The fourth proportional to 31,998.45, 48,006.90 and 9,815.10 is: 14,725.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,998.45 : 48,006.90 = 9,815.10 : x
  2. Step 2: Convert to fraction form
    31,998.45/48,006.90 = 9,815.10/x
  3. Step 3: Cross multiply
    31,998.45x = 48,006.90 × 9,815.10
  4. Step 4: Simplify right side
    31,998.45x = 471,192,524.19
  5. Step 5: Solve for x
    x = 471,192,524.19/31,998.45
  6. Step 6: Final answer
    x = 14,725.48

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.