Home / 19,286.90-28,930.04-6,139.12

Finding the Fourth Proportional to 19,286.90, 28,930.04 and 6,139.12

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Solution

The fourth proportional to 19,286.90, 28,930.04 and 6,139.12 is: 9,208.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,286.90 : 28,930.04 = 6,139.12 : x
  2. Step 2: Convert to fraction form
    19,286.90/28,930.04 = 6,139.12/x
  3. Step 3: Cross multiply
    19,286.90x = 28,930.04 × 6,139.12
  4. Step 4: Simplify right side
    19,286.90x = 177,604,987.16
  5. Step 5: Solve for x
    x = 177,604,987.16/19,286.90
  6. Step 6: Final answer
    x = 9,208.58

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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.