Home / 12,330.96-18,489.60-8,440.08

Finding the Fourth Proportional to 12,330.96, 18,489.60 and 8,440.08

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Solution

The fourth proportional to 12,330.96, 18,489.60 and 8,440.08 is: 12,655.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,330.96 : 18,489.60 = 8,440.08 : x
  2. Step 2: Convert to fraction form
    12,330.96/18,489.60 = 8,440.08/x
  3. Step 3: Cross multiply
    12,330.96x = 18,489.60 × 8,440.08
  4. Step 4: Simplify right side
    12,330.96x = 156,053,703.17
  5. Step 5: Solve for x
    x = 156,053,703.17/12,330.96
  6. Step 6: Final answer
    x = 12,655.44

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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.