Home / 21,967.20-32,967.36-18,882.72

Finding the Fourth Proportional to 21,967.20, 32,967.36 and 18,882.72

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Solution

The fourth proportional to 21,967.20, 32,967.36 and 18,882.72 is: 28,338.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,967.20 : 32,967.36 = 18,882.72 : x
  2. Step 2: Convert to fraction form
    21,967.20/32,967.36 = 18,882.72/x
  3. Step 3: Cross multiply
    21,967.20x = 32,967.36 × 18,882.72
  4. Step 4: Simplify right side
    21,967.20x = 622,513,428.02
  5. Step 5: Solve for x
    x = 622,513,428.02/21,967.20
  6. Step 6: Final answer
    x = 28,338.31

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1.5x scale

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.