Home / 19,286.90-28,920.06-9,144.62

Finding the Fourth Proportional to 19,286.90, 28,920.06 and 9,144.62

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Solution

The fourth proportional to 19,286.90, 28,920.06 and 9,144.62 is: 13,712.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,286.90 : 28,920.06 = 9,144.62 : x
  2. Step 2: Convert to fraction form
    19,286.90/28,920.06 = 9,144.62/x
  3. Step 3: Cross multiply
    19,286.90x = 28,920.06 × 9,144.62
  4. Step 4: Simplify right side
    19,286.90x = 264,462,959.08
  5. Step 5: Solve for x
    x = 264,462,959.08/19,286.90
  6. Step 6: Final answer
    x = 13,712.05

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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.