Home / 21,996.30-32,921.55-15,435.30

Finding the Fourth Proportional to 21,996.30, 32,921.55 and 15,435.30

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Solution

The fourth proportional to 21,996.30, 32,921.55 and 15,435.30 is: 23,101.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,996.30 : 32,921.55 = 15,435.30 : x
  2. Step 2: Convert to fraction form
    21,996.30/32,921.55 = 15,435.30/x
  3. Step 3: Cross multiply
    21,996.30x = 32,921.55 × 15,435.30
  4. Step 4: Simplify right side
    21,996.30x = 508,154,000.72
  5. Step 5: Solve for x
    x = 508,154,000.72/21,996.30
  6. Step 6: Final answer
    x = 23,101.79

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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.