Home / 26,557.18-39,860.42-13,418.78

Finding the Fourth Proportional to 26,557.18, 39,860.42 and 13,418.78

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Solution

The fourth proportional to 26,557.18, 39,860.42 and 13,418.78 is: 20,140.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,557.18 : 39,860.42 = 13,418.78 : x
  2. Step 2: Convert to fraction form
    26,557.18/39,860.42 = 13,418.78/x
  3. Step 3: Cross multiply
    26,557.18x = 39,860.42 × 13,418.78
  4. Step 4: Simplify right side
    26,557.18x = 534,878,206.69
  5. Step 5: Solve for x
    x = 534,878,206.69/26,557.18
  6. Step 6: Final answer
    x = 20,140.63

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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.