Home / 15,110.90-20,849.82-9,141.38

Finding the Fourth Proportional to 15,110.90, 20,849.82 and 9,141.38

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Solution

The fourth proportional to 15,110.90, 20,849.82 and 9,141.38 is: 12,613.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,110.90 : 20,849.82 = 9,141.38 : x
  2. Step 2: Convert to fraction form
    15,110.90/20,849.82 = 9,141.38/x
  3. Step 3: Cross multiply
    15,110.90x = 20,849.82 × 9,141.38
  4. Step 4: Simplify right side
    15,110.90x = 190,596,127.55
  5. Step 5: Solve for x
    x = 190,596,127.55/15,110.90
  6. Step 6: Final answer
    x = 12,613.16

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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.