Home / 20,114.30-27,766.12-12,154.53

Finding the Fourth Proportional to 20,114.30, 27,766.12 and 12,154.53

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Solution

The fourth proportional to 20,114.30, 27,766.12 and 12,154.53 is: 16,778.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,114.30 : 27,766.12 = 12,154.53 : x
  2. Step 2: Convert to fraction form
    20,114.30/27,766.12 = 12,154.53/x
  3. Step 3: Cross multiply
    20,114.30x = 27,766.12 × 12,154.53
  4. Step 4: Simplify right side
    20,114.30x = 337,484,138.52
  5. Step 5: Solve for x
    x = 337,484,138.52/20,114.30
  6. Step 6: Final answer
    x = 16,778.32

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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.