Home / 12,847.40-17,713.86-8,862.20

Finding the Fourth Proportional to 12,847.40, 17,713.86 and 8,862.20

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Solution

The fourth proportional to 12,847.40, 17,713.86 and 8,862.20 is: 12,219.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,847.40 : 17,713.86 = 8,862.20 : x
  2. Step 2: Convert to fraction form
    12,847.40/17,713.86 = 8,862.20/x
  3. Step 3: Cross multiply
    12,847.40x = 17,713.86 × 8,862.20
  4. Step 4: Simplify right side
    12,847.40x = 156,983,770.09
  5. Step 5: Solve for x
    x = 156,983,770.09/12,847.40
  6. Step 6: Final answer
    x = 12,219.11

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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.