Home / 21,686.13-29,926.86-11,750.13

Finding the Fourth Proportional to 21,686.13, 29,926.86 and 11,750.13

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Solution

The fourth proportional to 21,686.13, 29,926.86 and 11,750.13 is: 16,215.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,686.13 : 29,926.86 = 11,750.13 : x
  2. Step 2: Convert to fraction form
    21,686.13/29,926.86 = 11,750.13/x
  3. Step 3: Cross multiply
    21,686.13x = 29,926.86 × 11,750.13
  4. Step 4: Simplify right side
    21,686.13x = 351,644,287.11
  5. Step 5: Solve for x
    x = 351,644,287.11/21,686.13
  6. Step 6: Final answer
    x = 16,215.17

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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.