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Finding the Fourth Proportional to 26,979.70, 40,469.55 and 26,211.70

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Solution

The fourth proportional to 26,979.70, 40,469.55 and 26,211.70 is: 39,317.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,979.70 : 40,469.55 = 26,211.70 : x
  2. Step 2: Convert to fraction form
    26,979.70/40,469.55 = 26,211.70/x
  3. Step 3: Cross multiply
    26,979.70x = 40,469.55 × 26,211.70
  4. Step 4: Simplify right side
    26,979.70x = 1,060,775,703.74
  5. Step 5: Solve for x
    x = 1,060,775,703.74/26,979.70
  6. Step 6: Final answer
    x = 39,317.55

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1.5x scale

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.