Home / 12,278.26-18,426.60-8,999.80

Finding the Fourth Proportional to 12,278.26, 18,426.60 and 8,999.80

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Solution

The fourth proportional to 12,278.26, 18,426.60 and 8,999.80 is: 13,506.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,278.26 : 18,426.60 = 8,999.80 : x
  2. Step 2: Convert to fraction form
    12,278.26/18,426.60 = 8,999.80/x
  3. Step 3: Cross multiply
    12,278.26x = 18,426.60 × 8,999.80
  4. Step 4: Simplify right side
    12,278.26x = 165,835,714.68
  5. Step 5: Solve for x
    x = 165,835,714.68/12,278.26
  6. Step 6: Final answer
    x = 13,506.45

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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.