Home / 13,136.05-18,127.79-7,167.85

Finding the Fourth Proportional to 13,136.05, 18,127.79 and 7,167.85

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Solution

The fourth proportional to 13,136.05, 18,127.79 and 7,167.85 is: 9,891.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,136.05 : 18,127.79 = 7,167.85 : x
  2. Step 2: Convert to fraction form
    13,136.05/18,127.79 = 7,167.85/x
  3. Step 3: Cross multiply
    13,136.05x = 18,127.79 × 7,167.85
  4. Step 4: Simplify right side
    13,136.05x = 129,937,252.15
  5. Step 5: Solve for x
    x = 129,937,252.15/13,136.05
  6. Step 6: Final answer
    x = 9,891.66

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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.