Home / 26,999.18-40,471.05-12,938.66

Finding the Fourth Proportional to 26,999.18, 40,471.05 and 12,938.66

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Solution

The fourth proportional to 26,999.18, 40,471.05 and 12,938.66 is: 19,394.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,999.18 : 40,471.05 = 12,938.66 : x
  2. Step 2: Convert to fraction form
    26,999.18/40,471.05 = 12,938.66/x
  3. Step 3: Cross multiply
    26,999.18x = 40,471.05 × 12,938.66
  4. Step 4: Simplify right side
    26,999.18x = 523,641,155.79
  5. Step 5: Solve for x
    x = 523,641,155.79/26,999.18
  6. Step 6: Final answer
    x = 19,394.71

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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.