Home / 21,579.78-32,358.63-9,882.98

Finding the Fourth Proportional to 21,579.78, 32,358.63 and 9,882.98

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Solution

The fourth proportional to 21,579.78, 32,358.63 and 9,882.98 is: 14,819.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,579.78 : 32,358.63 = 9,882.98 : x
  2. Step 2: Convert to fraction form
    21,579.78/32,358.63 = 9,882.98/x
  3. Step 3: Cross multiply
    21,579.78x = 32,358.63 × 9,882.98
  4. Step 4: Simplify right side
    21,579.78x = 319,799,531.32
  5. Step 5: Solve for x
    x = 319,799,531.32/21,579.78
  6. Step 6: Final answer
    x = 14,819.41

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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.