Home / 12,283.66-18,420.92-8,356.29

Finding the Fourth Proportional to 12,283.66, 18,420.92 and 8,356.29

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Solution

The fourth proportional to 12,283.66, 18,420.92 and 8,356.29 is: 12,531.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,283.66 : 18,420.92 = 8,356.29 : x
  2. Step 2: Convert to fraction form
    12,283.66/18,420.92 = 8,356.29/x
  3. Step 3: Cross multiply
    12,283.66x = 18,420.92 × 8,356.29
  4. Step 4: Simplify right side
    12,283.66x = 153,930,549.59
  5. Step 5: Solve for x
    x = 153,930,549.59/12,283.66
  6. Step 6: Final answer
    x = 12,531.33

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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.