Home / 20,862.48-31,293.78-6,071.75

Finding the Fourth Proportional to 20,862.48, 31,293.78 and 6,071.75

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Solution

The fourth proportional to 20,862.48, 31,293.78 and 6,071.75 is: 9,107.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,862.48 : 31,293.78 = 6,071.75 : x
  2. Step 2: Convert to fraction form
    20,862.48/31,293.78 = 6,071.75/x
  3. Step 3: Cross multiply
    20,862.48x = 31,293.78 × 6,071.75
  4. Step 4: Simplify right side
    20,862.48x = 190,008,008.72
  5. Step 5: Solve for x
    x = 190,008,008.72/20,862.48
  6. Step 6: Final answer
    x = 9,107.64

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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.