Home / 10,972.86-15,136.38-6,725.98

Finding the Fourth Proportional to 10,972.86, 15,136.38 and 6,725.98

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Solution

The fourth proportional to 10,972.86, 15,136.38 and 6,725.98 is: 9,278.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,972.86 : 15,136.38 = 6,725.98 : x
  2. Step 2: Convert to fraction form
    10,972.86/15,136.38 = 6,725.98/x
  3. Step 3: Cross multiply
    10,972.86x = 15,136.38 × 6,725.98
  4. Step 4: Simplify right side
    10,972.86x = 101,806,989.15
  5. Step 5: Solve for x
    x = 101,806,989.15/10,972.86
  6. Step 6: Final answer
    x = 9,278.07

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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.