Home / 21,276.65-31,914.96-5,693.87

Finding the Fourth Proportional to 21,276.65, 31,914.96 and 5,693.87

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Solution

The fourth proportional to 21,276.65, 31,914.96 and 5,693.87 is: 8,540.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,276.65 : 31,914.96 = 5,693.87 : x
  2. Step 2: Convert to fraction form
    21,276.65/31,914.96 = 5,693.87/x
  3. Step 3: Cross multiply
    21,276.65x = 31,914.96 × 5,693.87
  4. Step 4: Simplify right side
    21,276.65x = 181,719,633.30
  5. Step 5: Solve for x
    x = 181,719,633.30/21,276.65
  6. Step 6: Final answer
    x = 8,540.80

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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.