Home / 13,443.76-20,165.10-9,478.54

Finding the Fourth Proportional to 13,443.76, 20,165.10 and 9,478.54

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Solution

The fourth proportional to 13,443.76, 20,165.10 and 9,478.54 is: 14,217.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,443.76 : 20,165.10 = 9,478.54 : x
  2. Step 2: Convert to fraction form
    13,443.76/20,165.10 = 9,478.54/x
  3. Step 3: Cross multiply
    13,443.76x = 20,165.10 × 9,478.54
  4. Step 4: Simplify right side
    13,443.76x = 191,135,706.95
  5. Step 5: Solve for x
    x = 191,135,706.95/13,443.76
  6. Step 6: Final answer
    x = 14,217.43

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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.