Home / 21,268.53-31,902.84-5,685.75

Finding the Fourth Proportional to 21,268.53, 31,902.84 and 5,685.75

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Solution

The fourth proportional to 21,268.53, 31,902.84 and 5,685.75 is: 8,528.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,268.53 : 31,902.84 = 5,685.75 : x
  2. Step 2: Convert to fraction form
    21,268.53/31,902.84 = 5,685.75/x
  3. Step 3: Cross multiply
    21,268.53x = 31,902.84 × 5,685.75
  4. Step 4: Simplify right side
    21,268.53x = 181,391,572.53
  5. Step 5: Solve for x
    x = 181,391,572.53/21,268.53
  6. Step 6: Final answer
    x = 8,528.64

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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.