Home / 21,528.72-32,293.32-7,677.84

Finding the Fourth Proportional to 21,528.72, 32,293.32 and 7,677.84

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Solution

The fourth proportional to 21,528.72, 32,293.32 and 7,677.84 is: 11,516.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,528.72 : 32,293.32 = 7,677.84 : x
  2. Step 2: Convert to fraction form
    21,528.72/32,293.32 = 7,677.84/x
  3. Step 3: Cross multiply
    21,528.72x = 32,293.32 × 7,677.84
  4. Step 4: Simplify right side
    21,528.72x = 247,942,944.03
  5. Step 5: Solve for x
    x = 247,942,944.03/21,528.72
  6. Step 6: Final answer
    x = 11,516.85

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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.