Home / 12,456.38-18,684.54-6,615.74

Finding the Fourth Proportional to 12,456.38, 18,684.54 and 6,615.74

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Solution

The fourth proportional to 12,456.38, 18,684.54 and 6,615.74 is: 9,923.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,456.38 : 18,684.54 = 6,615.74 : x
  2. Step 2: Convert to fraction form
    12,456.38/18,684.54 = 6,615.74/x
  3. Step 3: Cross multiply
    12,456.38x = 18,684.54 × 6,615.74
  4. Step 4: Simplify right side
    12,456.38x = 123,612,058.66
  5. Step 5: Solve for x
    x = 123,612,058.66/12,456.38
  6. Step 6: Final answer
    x = 9,923.59

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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.