Home / 10,423.20-15,636.15-3,400.74

Finding the Fourth Proportional to 10,423.20, 15,636.15 and 3,400.74

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Solution

The fourth proportional to 10,423.20, 15,636.15 and 3,400.74 is: 5,101.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,423.20 : 15,636.15 = 3,400.74 : x
  2. Step 2: Convert to fraction form
    10,423.20/15,636.15 = 3,400.74/x
  3. Step 3: Cross multiply
    10,423.20x = 15,636.15 × 3,400.74
  4. Step 4: Simplify right side
    10,423.20x = 53,174,480.75
  5. Step 5: Solve for x
    x = 53,174,480.75/10,423.20
  6. Step 6: Final answer
    x = 5,101.55

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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.