Home / 21,985.20-32,929.20-18,097.20

Finding the Fourth Proportional to 21,985.20, 32,929.20 and 18,097.20

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Solution

The fourth proportional to 21,985.20, 32,929.20 and 18,097.20 is: 27,105.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,985.20 : 32,929.20 = 18,097.20 : x
  2. Step 2: Convert to fraction form
    21,985.20/32,929.20 = 18,097.20/x
  3. Step 3: Cross multiply
    21,985.20x = 32,929.20 × 18,097.20
  4. Step 4: Simplify right side
    21,985.20x = 595,926,318.24
  5. Step 5: Solve for x
    x = 595,926,318.24/21,985.20
  6. Step 6: Final answer
    x = 27,105.79

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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.