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Finding the Fourth Proportional to 22,209.52, 30,658.08 and 15,143.08

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Solution

The fourth proportional to 22,209.52, 30,658.08 and 15,143.08 is: 20,903.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,209.52 : 30,658.08 = 15,143.08 : x
  2. Step 2: Convert to fraction form
    22,209.52/30,658.08 = 15,143.08/x
  3. Step 3: Cross multiply
    22,209.52x = 30,658.08 × 15,143.08
  4. Step 4: Simplify right side
    22,209.52x = 464,257,758.09
  5. Step 5: Solve for x
    x = 464,257,758.09/22,209.52
  6. Step 6: Final answer
    x = 20,903.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.