Home / 10,343.70-15,515.55-7,449.30

Finding the Fourth Proportional to 10,343.70, 15,515.55 and 7,449.30

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Solution

The fourth proportional to 10,343.70, 15,515.55 and 7,449.30 is: 11,173.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,343.70 : 15,515.55 = 7,449.30 : x
  2. Step 2: Convert to fraction form
    10,343.70/15,515.55 = 7,449.30/x
  3. Step 3: Cross multiply
    10,343.70x = 15,515.55 × 7,449.30
  4. Step 4: Simplify right side
    10,343.70x = 115,579,986.62
  5. Step 5: Solve for x
    x = 115,579,986.62/10,343.70
  6. Step 6: Final answer
    x = 11,173.95

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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.