Home / 21,871.77-32,864.36-19,105.89

Finding the Fourth Proportional to 21,871.77, 32,864.36 and 19,105.89

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Solution

The fourth proportional to 21,871.77, 32,864.36 and 19,105.89 is: 28,708.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,871.77 : 32,864.36 = 19,105.89 : x
  2. Step 2: Convert to fraction form
    21,871.77/32,864.36 = 19,105.89/x
  3. Step 3: Cross multiply
    21,871.77x = 32,864.36 × 19,105.89
  4. Step 4: Simplify right side
    21,871.77x = 627,902,751.55
  5. Step 5: Solve for x
    x = 627,902,751.55/21,871.77
  6. Step 6: Final answer
    x = 28,708.36

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.