Home / 12,287.27-18,432.10-4,890

Finding the Fourth Proportional to 12,287.27, 18,432.10 and 4,890

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Solution

The fourth proportional to 12,287.27, 18,432.10 and 4,890 is: 7,335.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,287.27 : 18,432.10 = 4,890 : x
  2. Step 2: Convert to fraction form
    12,287.27/18,432.10 = 4,890/x
  3. Step 3: Cross multiply
    12,287.27x = 18,432.10 × 4,890
  4. Step 4: Simplify right side
    12,287.27x = 90,132,969
  5. Step 5: Solve for x
    x = 90,132,969/12,287.27
  6. Step 6: Final answer
    x = 7,335.48

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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.