Home / 26,868.89-40,241.87-12,838.78

Finding the Fourth Proportional to 26,868.89, 40,241.87 and 12,838.78

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Solution

The fourth proportional to 26,868.89, 40,241.87 and 12,838.78 is: 19,228.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,868.89 : 40,241.87 = 12,838.78 : x
  2. Step 2: Convert to fraction form
    26,868.89/40,241.87 = 12,838.78/x
  3. Step 3: Cross multiply
    26,868.89x = 40,241.87 × 12,838.78
  4. Step 4: Simplify right side
    26,868.89x = 516,656,697.64
  5. Step 5: Solve for x
    x = 516,656,697.64/26,868.89
  6. Step 6: Final answer
    x = 19,228.80

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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.