Home / 12,132.70-18,195.99-8,612.38

Finding the Fourth Proportional to 12,132.70, 18,195.99 and 8,612.38

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Solution

The fourth proportional to 12,132.70, 18,195.99 and 8,612.38 is: 12,916.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,132.70 : 18,195.99 = 8,612.38 : x
  2. Step 2: Convert to fraction form
    12,132.70/18,195.99 = 8,612.38/x
  3. Step 3: Cross multiply
    12,132.70x = 18,195.99 × 8,612.38
  4. Step 4: Simplify right side
    12,132.70x = 156,710,780.36
  5. Step 5: Solve for x
    x = 156,710,780.36/12,132.70
  6. Step 6: Final answer
    x = 12,916.40

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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.