Home / 21,304.28-31,958.75-5,723.12

Finding the Fourth Proportional to 21,304.28, 31,958.75 and 5,723.12

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Solution

The fourth proportional to 21,304.28, 31,958.75 and 5,723.12 is: 8,585.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,304.28 : 31,958.75 = 5,723.12 : x
  2. Step 2: Convert to fraction form
    21,304.28/31,958.75 = 5,723.12/x
  3. Step 3: Cross multiply
    21,304.28x = 31,958.75 × 5,723.12
  4. Step 4: Simplify right side
    21,304.28x = 182,903,615.81
  5. Step 5: Solve for x
    x = 182,903,615.81/21,304.28
  6. Step 6: Final answer
    x = 8,585.30

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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.