Home / 10,371.20-15,556.80-3,445.70

Finding the Fourth Proportional to 10,371.20, 15,556.80 and 3,445.70

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Solution

The fourth proportional to 10,371.20, 15,556.80 and 3,445.70 is: 5,168.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,371.20 : 15,556.80 = 3,445.70 : x
  2. Step 2: Convert to fraction form
    10,371.20/15,556.80 = 3,445.70/x
  3. Step 3: Cross multiply
    10,371.20x = 15,556.80 × 3,445.70
  4. Step 4: Simplify right side
    10,371.20x = 53,604,065.76
  5. Step 5: Solve for x
    x = 53,604,065.76/10,371.20
  6. Step 6: Final answer
    x = 5,168.55

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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.