Home / 10,343.20-15,514.80-5,159.20

Finding the Fourth Proportional to 10,343.20, 15,514.80 and 5,159.20

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Solution

The fourth proportional to 10,343.20, 15,514.80 and 5,159.20 is: 7,738.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,343.20 : 15,514.80 = 5,159.20 : x
  2. Step 2: Convert to fraction form
    10,343.20/15,514.80 = 5,159.20/x
  3. Step 3: Cross multiply
    10,343.20x = 15,514.80 × 5,159.20
  4. Step 4: Simplify right side
    10,343.20x = 80,043,956.16
  5. Step 5: Solve for x
    x = 80,043,956.16/10,343.20
  6. Step 6: Final answer
    x = 7,738.80

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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.