Home / 21,433.05-32,128.31-10,871.66

Finding the Fourth Proportional to 21,433.05, 32,128.31 and 10,871.66

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Solution

The fourth proportional to 21,433.05, 32,128.31 and 10,871.66 is: 16,296.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,433.05 : 32,128.31 = 10,871.66 : x
  2. Step 2: Convert to fraction form
    21,433.05/32,128.31 = 10,871.66/x
  3. Step 3: Cross multiply
    21,433.05x = 32,128.31 × 10,871.66
  4. Step 4: Simplify right side
    21,433.05x = 349,288,062.69
  5. Step 5: Solve for x
    x = 349,288,062.69/21,433.05
  6. Step 6: Final answer
    x = 16,296.70

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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.