Home / 12,158.58-18,251.31-8,711.22

Finding the Fourth Proportional to 12,158.58, 18,251.31 and 8,711.22

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Solution

The fourth proportional to 12,158.58, 18,251.31 and 8,711.22 is: 13,076.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,158.58 : 18,251.31 = 8,711.22 : x
  2. Step 2: Convert to fraction form
    12,158.58/18,251.31 = 8,711.22/x
  3. Step 3: Cross multiply
    12,158.58x = 18,251.31 × 8,711.22
  4. Step 4: Simplify right side
    12,158.58x = 158,991,176.70
  5. Step 5: Solve for x
    x = 158,991,176.70/12,158.58
  6. Step 6: Final answer
    x = 13,076.46

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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.