Home / 40,189.18-60,292.20-12,111.28

Finding the Fourth Proportional to 40,189.18, 60,292.20 and 12,111.28

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Solution

The fourth proportional to 40,189.18, 60,292.20 and 12,111.28 is: 18,169.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,189.18 : 60,292.20 = 12,111.28 : x
  2. Step 2: Convert to fraction form
    40,189.18/60,292.20 = 12,111.28/x
  3. Step 3: Cross multiply
    40,189.18x = 60,292.20 × 12,111.28
  4. Step 4: Simplify right side
    40,189.18x = 730,215,716.02
  5. Step 5: Solve for x
    x = 730,215,716.02/40,189.18
  6. Step 6: Final answer
    x = 18,169.46

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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.