Home / 26,912.70-40,342.86-12,869.08

Finding the Fourth Proportional to 26,912.70, 40,342.86 and 12,869.08

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Solution

The fourth proportional to 26,912.70, 40,342.86 and 12,869.08 is: 19,291.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,912.70 : 40,342.86 = 12,869.08 : x
  2. Step 2: Convert to fraction form
    26,912.70/40,342.86 = 12,869.08/x
  3. Step 3: Cross multiply
    26,912.70x = 40,342.86 × 12,869.08
  4. Step 4: Simplify right side
    26,912.70x = 519,175,492.77
  5. Step 5: Solve for x
    x = 519,175,492.77/26,912.70
  6. Step 6: Final answer
    x = 19,291.10

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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.