Home / 13,136.67-18,127.85-7,472.79

Finding the Fourth Proportional to 13,136.67, 18,127.85 and 7,472.79

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Solution

The fourth proportional to 13,136.67, 18,127.85 and 7,472.79 is: 10,312.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,136.67 : 18,127.85 = 7,472.79 : x
  2. Step 2: Convert to fraction form
    13,136.67/18,127.85 = 7,472.79/x
  3. Step 3: Cross multiply
    13,136.67x = 18,127.85 × 7,472.79
  4. Step 4: Simplify right side
    13,136.67x = 135,465,578.84
  5. Step 5: Solve for x
    x = 135,465,578.84/13,136.67
  6. Step 6: Final answer
    x = 10,312.02

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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.