Home / 40,400.40-60,550.20-20,686.80

Finding the Fourth Proportional to 40,400.40, 60,550.20 and 20,686.80

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Solution

The fourth proportional to 40,400.40, 60,550.20 and 20,686.80 is: 31,004.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,400.40 : 60,550.20 = 20,686.80 : x
  2. Step 2: Convert to fraction form
    40,400.40/60,550.20 = 20,686.80/x
  3. Step 3: Cross multiply
    40,400.40x = 60,550.20 × 20,686.80
  4. Step 4: Simplify right side
    40,400.40x = 1,252,589,877.36
  5. Step 5: Solve for x
    x = 1,252,589,877.36/40,400.40
  6. Step 6: Final answer
    x = 31,004.39

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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.