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Finding the Fourth Proportional to 19,227.96, 28,821.96 and 7,378.92

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Solution

The fourth proportional to 19,227.96, 28,821.96 and 7,378.92 is: 11,060.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,227.96 : 28,821.96 = 7,378.92 : x
  2. Step 2: Convert to fraction form
    19,227.96/28,821.96 = 7,378.92/x
  3. Step 3: Cross multiply
    19,227.96x = 28,821.96 × 7,378.92
  4. Step 4: Simplify right side
    19,227.96x = 212,674,937.08
  5. Step 5: Solve for x
    x = 212,674,937.08/19,227.96
  6. Step 6: Final answer
    x = 11,060.71

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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.