Home / 26,916.80-40,346.40-12,123.20

Finding the Fourth Proportional to 26,916.80, 40,346.40 and 12,123.20

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Solution

The fourth proportional to 26,916.80, 40,346.40 and 12,123.20 is: 18,171.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,916.80 : 40,346.40 = 12,123.20 : x
  2. Step 2: Convert to fraction form
    26,916.80/40,346.40 = 12,123.20/x
  3. Step 3: Cross multiply
    26,916.80x = 40,346.40 × 12,123.20
  4. Step 4: Simplify right side
    26,916.80x = 489,127,476.48
  5. Step 5: Solve for x
    x = 489,127,476.48/26,916.80
  6. Step 6: Final answer
    x = 18,171.83

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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.