Home / 12,279.97-16,948.40-7,245.43

Finding the Fourth Proportional to 12,279.97, 16,948.40 and 7,245.43

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Solution

The fourth proportional to 12,279.97, 16,948.40 and 7,245.43 is: 9,999.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,279.97 : 16,948.40 = 7,245.43 : x
  2. Step 2: Convert to fraction form
    12,279.97/16,948.40 = 7,245.43/x
  3. Step 3: Cross multiply
    12,279.97x = 16,948.40 × 7,245.43
  4. Step 4: Simplify right side
    12,279.97x = 122,798,445.81
  5. Step 5: Solve for x
    x = 122,798,445.81/12,279.97
  6. Step 6: Final answer
    x = 9,999.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.