Home / 19,874.85-27,428.66-13,148.81

Finding the Fourth Proportional to 19,874.85, 27,428.66 and 13,148.81

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Solution

The fourth proportional to 19,874.85, 27,428.66 and 13,148.81 is: 18,146.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,874.85 : 27,428.66 = 13,148.81 : x
  2. Step 2: Convert to fraction form
    19,874.85/27,428.66 = 13,148.81/x
  3. Step 3: Cross multiply
    19,874.85x = 27,428.66 × 13,148.81
  4. Step 4: Simplify right side
    19,874.85x = 360,654,238.89
  5. Step 5: Solve for x
    x = 360,654,238.89/19,874.85
  6. Step 6: Final answer
    x = 18,146.26

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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.