Home / 12,721.96-17,557.49-7,344.57

Finding the Fourth Proportional to 12,721.96, 17,557.49 and 7,344.57

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Solution

The fourth proportional to 12,721.96, 17,557.49 and 7,344.57 is: 10,136.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,721.96 : 17,557.49 = 7,344.57 : x
  2. Step 2: Convert to fraction form
    12,721.96/17,557.49 = 7,344.57/x
  3. Step 3: Cross multiply
    12,721.96x = 17,557.49 × 7,344.57
  4. Step 4: Simplify right side
    12,721.96x = 128,952,232.69
  5. Step 5: Solve for x
    x = 128,952,232.69/12,721.96
  6. Step 6: Final answer
    x = 10,136.19

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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.