Home / 10,308.68-15,451.74-5,311.36

Finding the Fourth Proportional to 10,308.68, 15,451.74 and 5,311.36

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Solution

The fourth proportional to 10,308.68, 15,451.74 and 5,311.36 is: 7,961.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,308.68 : 15,451.74 = 5,311.36 : x
  2. Step 2: Convert to fraction form
    10,308.68/15,451.74 = 5,311.36/x
  3. Step 3: Cross multiply
    10,308.68x = 15,451.74 × 5,311.36
  4. Step 4: Simplify right side
    10,308.68x = 82,069,753.77
  5. Step 5: Solve for x
    x = 82,069,753.77/10,308.68
  6. Step 6: Final answer
    x = 7,961.23

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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.