Home / 21,818.88-32,732.40-11,952.72

Finding the Fourth Proportional to 21,818.88, 32,732.40 and 11,952.72

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Solution

The fourth proportional to 21,818.88, 32,732.40 and 11,952.72 is: 17,931.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,818.88 : 32,732.40 = 11,952.72 : x
  2. Step 2: Convert to fraction form
    21,818.88/32,732.40 = 11,952.72/x
  3. Step 3: Cross multiply
    21,818.88x = 32,732.40 × 11,952.72
  4. Step 4: Simplify right side
    21,818.88x = 391,241,212.13
  5. Step 5: Solve for x
    x = 391,241,212.13/21,818.88
  6. Step 6: Final answer
    x = 17,931.32

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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.