Home / 13,442.38-20,153.58-8,178.46

Finding the Fourth Proportional to 13,442.38, 20,153.58 and 8,178.46

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Solution

The fourth proportional to 13,442.38, 20,153.58 and 8,178.46 is: 12,261.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,442.38 : 20,153.58 = 8,178.46 : x
  2. Step 2: Convert to fraction form
    13,442.38/20,153.58 = 8,178.46/x
  3. Step 3: Cross multiply
    13,442.38x = 20,153.58 × 8,178.46
  4. Step 4: Simplify right side
    13,442.38x = 164,825,247.89
  5. Step 5: Solve for x
    x = 164,825,247.89/13,442.38
  6. Step 6: Final answer
    x = 12,261.61

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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.