Home / 12,124.95-18,158.22-8,217.51

Finding the Fourth Proportional to 12,124.95, 18,158.22 and 8,217.51

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Solution

The fourth proportional to 12,124.95, 18,158.22 and 8,217.51 is: 12,306.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,124.95 : 18,158.22 = 8,217.51 : x
  2. Step 2: Convert to fraction form
    12,124.95/18,158.22 = 8,217.51/x
  3. Step 3: Cross multiply
    12,124.95x = 18,158.22 × 8,217.51
  4. Step 4: Simplify right side
    12,124.95x = 149,215,354.43
  5. Step 5: Solve for x
    x = 149,215,354.43/12,124.95
  6. Step 6: Final answer
    x = 12,306.47

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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.