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Finding the Fourth Proportional to 15,042, 20,758.01 and 8,328.09

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Solution

The fourth proportional to 15,042, 20,758.01 and 8,328.09 is: 11,492.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,042 : 20,758.01 = 8,328.09 : x
  2. Step 2: Convert to fraction form
    15,042/20,758.01 = 8,328.09/x
  3. Step 3: Cross multiply
    15,042x = 20,758.01 × 8,328.09
  4. Step 4: Simplify right side
    15,042x = 172,874,533.86
  5. Step 5: Solve for x
    x = 172,874,533.86/15,042
  6. Step 6: Final answer
    x = 11,492.79

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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.