Home / 12,118.08-16,731.36-9,330.24

Finding the Fourth Proportional to 12,118.08, 16,731.36 and 9,330.24

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Solution

The fourth proportional to 12,118.08, 16,731.36 and 9,330.24 is: 12,882.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,118.08 : 16,731.36 = 9,330.24 : x
  2. Step 2: Convert to fraction form
    12,118.08/16,731.36 = 9,330.24/x
  3. Step 3: Cross multiply
    12,118.08x = 16,731.36 × 9,330.24
  4. Step 4: Simplify right side
    12,118.08x = 156,107,604.33
  5. Step 5: Solve for x
    x = 156,107,604.33/12,118.08
  6. Step 6: Final answer
    x = 12,882.21

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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.