Home / 22,421.95-30,937.54-12,861.12

Finding the Fourth Proportional to 22,421.95, 30,937.54 and 12,861.12

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Solution

The fourth proportional to 22,421.95, 30,937.54 and 12,861.12 is: 17,745.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,421.95 : 30,937.54 = 12,861.12 : x
  2. Step 2: Convert to fraction form
    22,421.95/30,937.54 = 12,861.12/x
  3. Step 3: Cross multiply
    22,421.95x = 30,937.54 × 12,861.12
  4. Step 4: Simplify right side
    22,421.95x = 397,891,414.44
  5. Step 5: Solve for x
    x = 397,891,414.44/22,421.95
  6. Step 6: Final answer
    x = 17,745.62

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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.