Home / 21,989.12-32,984.28-18,849.56

Finding the Fourth Proportional to 21,989.12, 32,984.28 and 18,849.56

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Solution

The fourth proportional to 21,989.12, 32,984.28 and 18,849.56 is: 28,274.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,989.12 : 32,984.28 = 18,849.56 : x
  2. Step 2: Convert to fraction form
    21,989.12/32,984.28 = 18,849.56/x
  3. Step 3: Cross multiply
    21,989.12x = 32,984.28 × 18,849.56
  4. Step 4: Simplify right side
    21,989.12x = 621,739,000.00
  5. Step 5: Solve for x
    x = 621,739,000.00/21,989.12
  6. Step 6: Final answer
    x = 28,274.85

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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.