Home / 12,931.26-19,405.38-7,092

Finding the Fourth Proportional to 12,931.26, 19,405.38 and 7,092

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Solution

The fourth proportional to 12,931.26, 19,405.38 and 7,092 is: 10,642.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,931.26 : 19,405.38 = 7,092 : x
  2. Step 2: Convert to fraction form
    12,931.26/19,405.38 = 7,092/x
  3. Step 3: Cross multiply
    12,931.26x = 19,405.38 × 7,092
  4. Step 4: Simplify right side
    12,931.26x = 137,622,954.96
  5. Step 5: Solve for x
    x = 137,622,954.96/12,931.26
  6. Step 6: Final answer
    x = 10,642.66

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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.