Home / 11,909.12-16,422.90-10,967.36

Finding the Fourth Proportional to 11,909.12, 16,422.90 and 10,967.36

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Solution

The fourth proportional to 11,909.12, 16,422.90 and 10,967.36 is: 15,124.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,909.12 : 16,422.90 = 10,967.36 : x
  2. Step 2: Convert to fraction form
    11,909.12/16,422.90 = 10,967.36/x
  3. Step 3: Cross multiply
    11,909.12x = 16,422.90 × 10,967.36
  4. Step 4: Simplify right side
    11,909.12x = 180,115,856.54
  5. Step 5: Solve for x
    x = 180,115,856.54/11,909.12
  6. Step 6: Final answer
    x = 15,124.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.