Home / 20,354.32-28,089.42-11,401.36

Finding the Fourth Proportional to 20,354.32, 28,089.42 and 11,401.36

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Solution

The fourth proportional to 20,354.32, 28,089.42 and 11,401.36 is: 15,734.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,354.32 : 28,089.42 = 11,401.36 : x
  2. Step 2: Convert to fraction form
    20,354.32/28,089.42 = 11,401.36/x
  3. Step 3: Cross multiply
    20,354.32x = 28,089.42 × 11,401.36
  4. Step 4: Simplify right side
    20,354.32x = 320,257,589.61
  5. Step 5: Solve for x
    x = 320,257,589.61/20,354.32
  6. Step 6: Final answer
    x = 15,734.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.