Home / 10,242.45-15,357.60-5,321.70

Finding the Fourth Proportional to 10,242.45, 15,357.60 and 5,321.70

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Solution

The fourth proportional to 10,242.45, 15,357.60 and 5,321.70 is: 7,979.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,242.45 : 15,357.60 = 5,321.70 : x
  2. Step 2: Convert to fraction form
    10,242.45/15,357.60 = 5,321.70/x
  3. Step 3: Cross multiply
    10,242.45x = 15,357.60 × 5,321.70
  4. Step 4: Simplify right side
    10,242.45x = 81,728,539.92
  5. Step 5: Solve for x
    x = 81,728,539.92/10,242.45
  6. Step 6: Final answer
    x = 7,979.39

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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.