Home / 13,442.73-18,551.31-8,134.47

Finding the Fourth Proportional to 13,442.73, 18,551.31 and 8,134.47

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Solution

The fourth proportional to 13,442.73, 18,551.31 and 8,134.47 is: 11,225.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,442.73 : 18,551.31 = 8,134.47 : x
  2. Step 2: Convert to fraction form
    13,442.73/18,551.31 = 8,134.47/x
  3. Step 3: Cross multiply
    13,442.73x = 18,551.31 × 8,134.47
  4. Step 4: Simplify right side
    13,442.73x = 150,905,074.66
  5. Step 5: Solve for x
    x = 150,905,074.66/13,442.73
  6. Step 6: Final answer
    x = 11,225.78

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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.