Home / 8,780.46-13,147.65-6,729.90

Finding the Fourth Proportional to 8,780.46, 13,147.65 and 6,729.90

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Solution

The fourth proportional to 8,780.46, 13,147.65 and 6,729.90 is: 10,077.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,780.46 : 13,147.65 = 6,729.90 : x
  2. Step 2: Convert to fraction form
    8,780.46/13,147.65 = 6,729.90/x
  3. Step 3: Cross multiply
    8,780.46x = 13,147.65 × 6,729.90
  4. Step 4: Simplify right side
    8,780.46x = 88,482,369.74
  5. Step 5: Solve for x
    x = 88,482,369.74/8,780.46
  6. Step 6: Final answer
    x = 10,077.19

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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.