Home / 40,220.16-60,330.24-12,520.32

Finding the Fourth Proportional to 40,220.16, 60,330.24 and 12,520.32

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Solution

The fourth proportional to 40,220.16, 60,330.24 and 12,520.32 is: 18,780.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,220.16 : 60,330.24 = 12,520.32 : x
  2. Step 2: Convert to fraction form
    40,220.16/60,330.24 = 12,520.32/x
  3. Step 3: Cross multiply
    40,220.16x = 60,330.24 × 12,520.32
  4. Step 4: Simplify right side
    40,220.16x = 755,353,910.48
  5. Step 5: Solve for x
    x = 755,353,910.48/40,220.16
  6. Step 6: Final answer
    x = 18,780.48

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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.