Home / 20,866.28-31,304.88-6,074.87

Finding the Fourth Proportional to 20,866.28, 31,304.88 and 6,074.87

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Solution

The fourth proportional to 20,866.28, 31,304.88 and 6,074.87 is: 9,113.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,866.28 : 31,304.88 = 6,074.87 : x
  2. Step 2: Convert to fraction form
    20,866.28/31,304.88 = 6,074.87/x
  3. Step 3: Cross multiply
    20,866.28x = 31,304.88 × 6,074.87
  4. Step 4: Simplify right side
    20,866.28x = 190,172,919.84
  5. Step 5: Solve for x
    x = 190,172,919.84/20,866.28
  6. Step 6: Final answer
    x = 9,113.89

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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.