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Finding the Fourth Proportional to 26,939.46, 40,405.53 and 7,218.19

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Solution

The fourth proportional to 26,939.46, 40,405.53 and 7,218.19 is: 10,826.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,939.46 : 40,405.53 = 7,218.19 : x
  2. Step 2: Convert to fraction form
    26,939.46/40,405.53 = 7,218.19/x
  3. Step 3: Cross multiply
    26,939.46x = 40,405.53 × 7,218.19
  4. Step 4: Simplify right side
    26,939.46x = 291,654,792.59
  5. Step 5: Solve for x
    x = 291,654,792.59/26,939.46
  6. Step 6: Final answer
    x = 10,826.30

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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.