Home / 17,905.78-26,822.11-8,517.40

Finding the Fourth Proportional to 17,905.78, 26,822.11 and 8,517.40

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Solution

The fourth proportional to 17,905.78, 26,822.11 and 8,517.40 is: 12,758.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,905.78 : 26,822.11 = 8,517.40 : x
  2. Step 2: Convert to fraction form
    17,905.78/26,822.11 = 8,517.40/x
  3. Step 3: Cross multiply
    17,905.78x = 26,822.11 × 8,517.40
  4. Step 4: Simplify right side
    17,905.78x = 228,454,639.71
  5. Step 5: Solve for x
    x = 228,454,639.71/17,905.78
  6. Step 6: Final answer
    x = 12,758.71

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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.