Home / 12,680.85-17,499.26-7,015.92

Finding the Fourth Proportional to 12,680.85, 17,499.26 and 7,015.92

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Solution

The fourth proportional to 12,680.85, 17,499.26 and 7,015.92 is: 9,681.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,680.85 : 17,499.26 = 7,015.92 : x
  2. Step 2: Convert to fraction form
    12,680.85/17,499.26 = 7,015.92/x
  3. Step 3: Cross multiply
    12,680.85x = 17,499.26 × 7,015.92
  4. Step 4: Simplify right side
    12,680.85x = 122,773,408.22
  5. Step 5: Solve for x
    x = 122,773,408.22/12,680.85
  6. Step 6: Final answer
    x = 9,681.80

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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.