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Finding the Fourth Proportional to 13,362.78, 18,442.65 and 8,060.52

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Solution

The fourth proportional to 13,362.78, 18,442.65 and 8,060.52 is: 11,124.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,362.78 : 18,442.65 = 8,060.52 : x
  2. Step 2: Convert to fraction form
    13,362.78/18,442.65 = 8,060.52/x
  3. Step 3: Cross multiply
    13,362.78x = 18,442.65 × 8,060.52
  4. Step 4: Simplify right side
    13,362.78x = 148,657,349.18
  5. Step 5: Solve for x
    x = 148,657,349.18/13,362.78
  6. Step 6: Final answer
    x = 11,124.73

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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.