Home / 20,723.12-31,056.88-11,349.04

Finding the Fourth Proportional to 20,723.12, 31,056.88 and 11,349.04

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Solution

The fourth proportional to 20,723.12, 31,056.88 and 11,349.04 is: 17,008.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,723.12 : 31,056.88 = 11,349.04 : x
  2. Step 2: Convert to fraction form
    20,723.12/31,056.88 = 11,349.04/x
  3. Step 3: Cross multiply
    20,723.12x = 31,056.88 × 11,349.04
  4. Step 4: Simplify right side
    20,723.12x = 352,465,773.40
  5. Step 5: Solve for x
    x = 352,465,773.40/20,723.12
  6. Step 6: Final answer
    x = 17,008.34

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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.