Home / 12,639.92-17,414.60-8,807.94

Finding the Fourth Proportional to 12,639.92, 17,414.60 and 8,807.94

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Solution

The fourth proportional to 12,639.92, 17,414.60 and 8,807.94 is: 12,135.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,639.92 : 17,414.60 = 8,807.94 : x
  2. Step 2: Convert to fraction form
    12,639.92/17,414.60 = 8,807.94/x
  3. Step 3: Cross multiply
    12,639.92x = 17,414.60 × 8,807.94
  4. Step 4: Simplify right side
    12,639.92x = 153,386,707.88
  5. Step 5: Solve for x
    x = 153,386,707.88/12,639.92
  6. Step 6: Final answer
    x = 12,135.11

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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.