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Finding the Fourth Proportional to 19,620.66, 27,077.66 and 11,123.12

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Solution

The fourth proportional to 19,620.66, 27,077.66 and 11,123.12 is: 15,350.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,620.66 : 27,077.66 = 11,123.12 : x
  2. Step 2: Convert to fraction form
    19,620.66/27,077.66 = 11,123.12/x
  3. Step 3: Cross multiply
    19,620.66x = 27,077.66 × 11,123.12
  4. Step 4: Simplify right side
    19,620.66x = 301,188,061.50
  5. Step 5: Solve for x
    x = 301,188,061.50/19,620.66
  6. Step 6: Final answer
    x = 15,350.56

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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.