Home / 28,658.32-42,991.80-10,186

Finding the Fourth Proportional to 28,658.32, 42,991.80 and 10,186

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Solution

The fourth proportional to 28,658.32, 42,991.80 and 10,186 is: 15,280.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,658.32 : 42,991.80 = 10,186 : x
  2. Step 2: Convert to fraction form
    28,658.32/42,991.80 = 10,186/x
  3. Step 3: Cross multiply
    28,658.32x = 42,991.80 × 10,186
  4. Step 4: Simplify right side
    28,658.32x = 437,914,474.80
  5. Step 5: Solve for x
    x = 437,914,474.80/28,658.32
  6. Step 6: Final answer
    x = 15,280.54

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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.