Home / 19,985.13-27,576.72-11,486.61

Finding the Fourth Proportional to 19,985.13, 27,576.72 and 11,486.61

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Solution

The fourth proportional to 19,985.13, 27,576.72 and 11,486.61 is: 15,849.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,985.13 : 27,576.72 = 11,486.61 : x
  2. Step 2: Convert to fraction form
    19,985.13/27,576.72 = 11,486.61/x
  3. Step 3: Cross multiply
    19,985.13x = 27,576.72 × 11,486.61
  4. Step 4: Simplify right side
    19,985.13x = 316,763,027.72
  5. Step 5: Solve for x
    x = 316,763,027.72/19,985.13
  6. Step 6: Final answer
    x = 15,849.94

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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.