Home / 28,351.68-42,484.41-13,540.20

Finding the Fourth Proportional to 28,351.68, 42,484.41 and 13,540.20

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Solution

The fourth proportional to 28,351.68, 42,484.41 and 13,540.20 is: 20,289.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,351.68 : 42,484.41 = 13,540.20 : x
  2. Step 2: Convert to fraction form
    28,351.68/42,484.41 = 13,540.20/x
  3. Step 3: Cross multiply
    28,351.68x = 42,484.41 × 13,540.20
  4. Step 4: Simplify right side
    28,351.68x = 575,247,408.28
  5. Step 5: Solve for x
    x = 575,247,408.28/28,351.68
  6. Step 6: Final answer
    x = 20,289.71

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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.