Home / 12,681.09-18,992.48-7,126.11

Finding the Fourth Proportional to 12,681.09, 18,992.48 and 7,126.11

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Solution

The fourth proportional to 12,681.09, 18,992.48 and 7,126.11 is: 10,672.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,681.09 : 18,992.48 = 7,126.11 : x
  2. Step 2: Convert to fraction form
    12,681.09/18,992.48 = 7,126.11/x
  3. Step 3: Cross multiply
    12,681.09x = 18,992.48 × 7,126.11
  4. Step 4: Simplify right side
    12,681.09x = 135,342,466.02
  5. Step 5: Solve for x
    x = 135,342,466.02/12,681.09
  6. Step 6: Final answer
    x = 10,672.78

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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.