Home / 10,439.32-15,649.26-5,239.12

Finding the Fourth Proportional to 10,439.32, 15,649.26 and 5,239.12

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Solution

The fourth proportional to 10,439.32, 15,649.26 and 5,239.12 is: 7,853.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,439.32 : 15,649.26 = 5,239.12 : x
  2. Step 2: Convert to fraction form
    10,439.32/15,649.26 = 5,239.12/x
  3. Step 3: Cross multiply
    10,439.32x = 15,649.26 × 5,239.12
  4. Step 4: Simplify right side
    10,439.32x = 81,988,351.05
  5. Step 5: Solve for x
    x = 81,988,351.05/10,439.32
  6. Step 6: Final answer
    x = 7,853.80

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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.