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Finding the Fourth Proportional to 20,371.65, 30,566.25 and 11,018.25

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Solution

The fourth proportional to 20,371.65, 30,566.25 and 11,018.25 is: 16,532.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,371.65 : 30,566.25 = 11,018.25 : x
  2. Step 2: Convert to fraction form
    20,371.65/30,566.25 = 11,018.25/x
  3. Step 3: Cross multiply
    20,371.65x = 30,566.25 × 11,018.25
  4. Step 4: Simplify right side
    20,371.65x = 336,786,502.34
  5. Step 5: Solve for x
    x = 336,786,502.34/20,371.65
  6. Step 6: Final answer
    x = 16,532.12

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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.