Home / 26,159.78-39,187.10-12,100.11

Finding the Fourth Proportional to 26,159.78, 39,187.10 and 12,100.11

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Solution

The fourth proportional to 26,159.78, 39,187.10 and 12,100.11 is: 18,125.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,159.78 : 39,187.10 = 12,100.11 : x
  2. Step 2: Convert to fraction form
    26,159.78/39,187.10 = 12,100.11/x
  3. Step 3: Cross multiply
    26,159.78x = 39,187.10 × 12,100.11
  4. Step 4: Simplify right side
    26,159.78x = 474,168,160.08
  5. Step 5: Solve for x
    x = 474,168,160.08/26,159.78
  6. Step 6: Final answer
    x = 18,125.85

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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.