Home / 21,991.20-32,988.96-7,199.52

Finding the Fourth Proportional to 21,991.20, 32,988.96 and 7,199.52

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Solution

The fourth proportional to 21,991.20, 32,988.96 and 7,199.52 is: 10,799.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,991.20 : 32,988.96 = 7,199.52 : x
  2. Step 2: Convert to fraction form
    21,991.20/32,988.96 = 7,199.52/x
  3. Step 3: Cross multiply
    21,991.20x = 32,988.96 × 7,199.52
  4. Step 4: Simplify right side
    21,991.20x = 237,504,677.30
  5. Step 5: Solve for x
    x = 237,504,677.30/21,991.20
  6. Step 6: Final answer
    x = 10,799.99

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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.