Home / 12,254.40-18,390.90-8,976

Finding the Fourth Proportional to 12,254.40, 18,390.90 and 8,976

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Solution

The fourth proportional to 12,254.40, 18,390.90 and 8,976 is: 13,470.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,254.40 : 18,390.90 = 8,976 : x
  2. Step 2: Convert to fraction form
    12,254.40/18,390.90 = 8,976/x
  3. Step 3: Cross multiply
    12,254.40x = 18,390.90 × 8,976
  4. Step 4: Simplify right side
    12,254.40x = 165,076,718.40
  5. Step 5: Solve for x
    x = 165,076,718.40/12,254.40
  6. Step 6: Final answer
    x = 13,470.81

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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.