Home / 45,686.88-68,531.76-12,406.86

Finding the Fourth Proportional to 45,686.88, 68,531.76 and 12,406.86

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Solution

The fourth proportional to 45,686.88, 68,531.76 and 12,406.86 is: 18,610.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,686.88 : 68,531.76 = 12,406.86 : x
  2. Step 2: Convert to fraction form
    45,686.88/68,531.76 = 12,406.86/x
  3. Step 3: Cross multiply
    45,686.88x = 68,531.76 × 12,406.86
  4. Step 4: Simplify right side
    45,686.88x = 850,263,951.87
  5. Step 5: Solve for x
    x = 850,263,951.87/45,686.88
  6. Step 6: Final answer
    x = 18,610.68

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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.