Home / 13,136.16-18,127.55-7,167.83

Finding the Fourth Proportional to 13,136.16, 18,127.55 and 7,167.83

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Solution

The fourth proportional to 13,136.16, 18,127.55 and 7,167.83 is: 9,891.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,136.16 : 18,127.55 = 7,167.83 : x
  2. Step 2: Convert to fraction form
    13,136.16/18,127.55 = 7,167.83/x
  3. Step 3: Cross multiply
    13,136.16x = 18,127.55 × 7,167.83
  4. Step 4: Simplify right side
    13,136.16x = 129,935,160.88
  5. Step 5: Solve for x
    x = 129,935,160.88/13,136.16
  6. Step 6: Final answer
    x = 9,891.41

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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.