Home / 26,909.90-40,352.70-12,111.20

Finding the Fourth Proportional to 26,909.90, 40,352.70 and 12,111.20

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Solution

The fourth proportional to 26,909.90, 40,352.70 and 12,111.20 is: 18,161.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,909.90 : 40,352.70 = 12,111.20 : x
  2. Step 2: Convert to fraction form
    26,909.90/40,352.70 = 12,111.20/x
  3. Step 3: Cross multiply
    26,909.90x = 40,352.70 × 12,111.20
  4. Step 4: Simplify right side
    26,909.90x = 488,719,620.24
  5. Step 5: Solve for x
    x = 488,719,620.24/26,909.90
  6. Step 6: Final answer
    x = 18,161.33

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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.