Home / 12,141.42-18,116.90-11,398.38

Finding the Fourth Proportional to 12,141.42, 18,116.90 and 11,398.38

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Solution

The fourth proportional to 12,141.42, 18,116.90 and 11,398.38 is: 17,008.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,141.42 : 18,116.90 = 11,398.38 : x
  2. Step 2: Convert to fraction form
    12,141.42/18,116.90 = 11,398.38/x
  3. Step 3: Cross multiply
    12,141.42x = 18,116.90 × 11,398.38
  4. Step 4: Simplify right side
    12,141.42x = 206,503,253.63
  5. Step 5: Solve for x
    x = 206,503,253.63/12,141.42
  6. Step 6: Final answer
    x = 17,008.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.