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Finding the Fourth Proportional to 12,342.88, 18,510.78 and 4,023.62

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Solution

The fourth proportional to 12,342.88, 18,510.78 and 4,023.62 is: 6,034.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,342.88 : 18,510.78 = 4,023.62 : x
  2. Step 2: Convert to fraction form
    12,342.88/18,510.78 = 4,023.62/x
  3. Step 3: Cross multiply
    12,342.88x = 18,510.78 × 4,023.62
  4. Step 4: Simplify right side
    12,342.88x = 74,480,418.06
  5. Step 5: Solve for x
    x = 74,480,418.06/12,342.88
  6. Step 6: Final answer
    x = 6,034.28

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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.