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Finding the Fourth Proportional to 8,974.45, 13,490.84 and 8,930.71

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Solution

The fourth proportional to 8,974.45, 13,490.84 and 8,930.71 is: 13,425.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,974.45 : 13,490.84 = 8,930.71 : x
  2. Step 2: Convert to fraction form
    8,974.45/13,490.84 = 8,930.71/x
  3. Step 3: Cross multiply
    8,974.45x = 13,490.84 × 8,930.71
  4. Step 4: Simplify right side
    8,974.45x = 120,482,779.70
  5. Step 5: Solve for x
    x = 120,482,779.70/8,974.45
  6. Step 6: Final answer
    x = 13,425.09

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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.