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Finding the Fourth Proportional to 19,019.22, 28,508.34 and 7,922.94

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Solution

The fourth proportional to 19,019.22, 28,508.34 and 7,922.94 is: 11,875.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,019.22 : 28,508.34 = 7,922.94 : x
  2. Step 2: Convert to fraction form
    19,019.22/28,508.34 = 7,922.94/x
  3. Step 3: Cross multiply
    19,019.22x = 28,508.34 × 7,922.94
  4. Step 4: Simplify right side
    19,019.22x = 225,869,867.32
  5. Step 5: Solve for x
    x = 225,869,867.32/19,019.22
  6. Step 6: Final answer
    x = 11,875.87

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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.