Home / 21,819.88-32,733.90-11,953.72

Finding the Fourth Proportional to 21,819.88, 32,733.90 and 11,953.72

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Solution

The fourth proportional to 21,819.88, 32,733.90 and 11,953.72 is: 17,932.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,819.88 : 32,733.90 = 11,953.72 : x
  2. Step 2: Convert to fraction form
    21,819.88/32,733.90 = 11,953.72/x
  3. Step 3: Cross multiply
    21,819.88x = 32,733.90 × 11,953.72
  4. Step 4: Simplify right side
    21,819.88x = 391,291,875.11
  5. Step 5: Solve for x
    x = 391,291,875.11/21,819.88
  6. Step 6: Final answer
    x = 17,932.82

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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.