Home / 20,451.18-30,645.34-12,114.61

Finding the Fourth Proportional to 20,451.18, 30,645.34 and 12,114.61

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Solution

The fourth proportional to 20,451.18, 30,645.34 and 12,114.61 is: 18,153.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,451.18 : 30,645.34 = 12,114.61 : x
  2. Step 2: Convert to fraction form
    20,451.18/30,645.34 = 12,114.61/x
  3. Step 3: Cross multiply
    20,451.18x = 30,645.34 × 12,114.61
  4. Step 4: Simplify right side
    20,451.18x = 371,256,407.90
  5. Step 5: Solve for x
    x = 371,256,407.90/20,451.18
  6. Step 6: Final answer
    x = 18,153.30

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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.