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Finding the Fourth Proportional to 15,000.02, 20,699.90 and 8,286.11

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Solution

The fourth proportional to 15,000.02, 20,699.90 and 8,286.11 is: 11,434.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,000.02 : 20,699.90 = 8,286.11 : x
  2. Step 2: Convert to fraction form
    15,000.02/20,699.90 = 8,286.11/x
  3. Step 3: Cross multiply
    15,000.02x = 20,699.90 × 8,286.11
  4. Step 4: Simplify right side
    15,000.02x = 171,521,705.29
  5. Step 5: Solve for x
    x = 171,521,705.29/15,000.02
  6. Step 6: Final answer
    x = 11,434.77

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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.