Home / 21,236.65-31,855.69-5,654.29

Finding the Fourth Proportional to 21,236.65, 31,855.69 and 5,654.29

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Solution

The fourth proportional to 21,236.65, 31,855.69 and 5,654.29 is: 8,481.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,236.65 : 31,855.69 = 5,654.29 : x
  2. Step 2: Convert to fraction form
    21,236.65/31,855.69 = 5,654.29/x
  3. Step 3: Cross multiply
    21,236.65x = 31,855.69 × 5,654.29
  4. Step 4: Simplify right side
    21,236.65x = 180,121,150.13
  5. Step 5: Solve for x
    x = 180,121,150.13/21,236.65
  6. Step 6: Final answer
    x = 8,481.62

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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.