Home / 40,221.20-60,331.80-12,515.60

Finding the Fourth Proportional to 40,221.20, 60,331.80 and 12,515.60

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Solution

The fourth proportional to 40,221.20, 60,331.80 and 12,515.60 is: 18,773.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,221.20 : 60,331.80 = 12,515.60 : x
  2. Step 2: Convert to fraction form
    40,221.20/60,331.80 = 12,515.60/x
  3. Step 3: Cross multiply
    40,221.20x = 60,331.80 × 12,515.60
  4. Step 4: Simplify right side
    40,221.20x = 755,088,676.08
  5. Step 5: Solve for x
    x = 755,088,676.08/40,221.20
  6. Step 6: Final answer
    x = 18,773.40

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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.