Home / 10,309.68-15,450.12-5,110.32

Finding the Fourth Proportional to 10,309.68, 15,450.12 and 5,110.32

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Solution

The fourth proportional to 10,309.68, 15,450.12 and 5,110.32 is: 7,658.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,309.68 : 15,450.12 = 5,110.32 : x
  2. Step 2: Convert to fraction form
    10,309.68/15,450.12 = 5,110.32/x
  3. Step 3: Cross multiply
    10,309.68x = 15,450.12 × 5,110.32
  4. Step 4: Simplify right side
    10,309.68x = 78,955,057.24
  5. Step 5: Solve for x
    x = 78,955,057.24/10,309.68
  6. Step 6: Final answer
    x = 7,658.34

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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.