Home / 28,408.62-39,204.10-15,834.18

Finding the Fourth Proportional to 28,408.62, 39,204.10 and 15,834.18

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Solution

The fourth proportional to 28,408.62, 39,204.10 and 15,834.18 is: 21,851.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,408.62 : 39,204.10 = 15,834.18 : x
  2. Step 2: Convert to fraction form
    28,408.62/39,204.10 = 15,834.18/x
  3. Step 3: Cross multiply
    28,408.62x = 39,204.10 × 15,834.18
  4. Step 4: Simplify right side
    28,408.62x = 620,764,776.14
  5. Step 5: Solve for x
    x = 620,764,776.14/28,408.62
  6. Step 6: Final answer
    x = 21,851.28

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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.