Home / 21,797.28-32,670-15,187.68

Finding the Fourth Proportional to 21,797.28, 32,670 and 15,187.68

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Solution

The fourth proportional to 21,797.28, 32,670 and 15,187.68 is: 22,763.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,797.28 : 32,670 = 15,187.68 : x
  2. Step 2: Convert to fraction form
    21,797.28/32,670 = 15,187.68/x
  3. Step 3: Cross multiply
    21,797.28x = 32,670 × 15,187.68
  4. Step 4: Simplify right side
    21,797.28x = 496,181,505.60
  5. Step 5: Solve for x
    x = 496,181,505.60/21,797.28
  6. Step 6: Final answer
    x = 22,763.46

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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.