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Finding the Fourth Proportional to 15,000.33, 20,700.62 and 8,286.14

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Solution

The fourth proportional to 15,000.33, 20,700.62 and 8,286.14 is: 11,434.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,000.33 : 20,700.62 = 8,286.14 : x
  2. Step 2: Convert to fraction form
    15,000.33/20,700.62 = 8,286.14/x
  3. Step 3: Cross multiply
    15,000.33x = 20,700.62 × 8,286.14
  4. Step 4: Simplify right side
    15,000.33x = 171,528,090.47
  5. Step 5: Solve for x
    x = 171,528,090.47/15,000.33
  6. Step 6: Final answer
    x = 11,434.95

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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.