Home / 28,438.92-42,660.33-8,731.23

Finding the Fourth Proportional to 28,438.92, 42,660.33 and 8,731.23

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Solution

The fourth proportional to 28,438.92, 42,660.33 and 8,731.23 is: 13,097.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,438.92 : 42,660.33 = 8,731.23 : x
  2. Step 2: Convert to fraction form
    28,438.92/42,660.33 = 8,731.23/x
  3. Step 3: Cross multiply
    28,438.92x = 42,660.33 × 8,731.23
  4. Step 4: Simplify right side
    28,438.92x = 372,477,153.11
  5. Step 5: Solve for x
    x = 372,477,153.11/28,438.92
  6. Step 6: Final answer
    x = 13,097.44

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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.