Home / 40,423.20-60,620.40-14,128.80

Finding the Fourth Proportional to 40,423.20, 60,620.40 and 14,128.80

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Solution

The fourth proportional to 40,423.20, 60,620.40 and 14,128.80 is: 21,188.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,423.20 : 60,620.40 = 14,128.80 : x
  2. Step 2: Convert to fraction form
    40,423.20/60,620.40 = 14,128.80/x
  3. Step 3: Cross multiply
    40,423.20x = 60,620.40 × 14,128.80
  4. Step 4: Simplify right side
    40,423.20x = 856,493,507.52
  5. Step 5: Solve for x
    x = 856,493,507.52/40,423.20
  6. Step 6: Final answer
    x = 21,188.17

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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.