Home / 28,288.67-42,432.99-7,228.75

Finding the Fourth Proportional to 28,288.67, 42,432.99 and 7,228.75

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Solution

The fourth proportional to 28,288.67, 42,432.99 and 7,228.75 is: 10,843.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,288.67 : 42,432.99 = 7,228.75 : x
  2. Step 2: Convert to fraction form
    28,288.67/42,432.99 = 7,228.75/x
  3. Step 3: Cross multiply
    28,288.67x = 42,432.99 × 7,228.75
  4. Step 4: Simplify right side
    28,288.67x = 306,737,476.46
  5. Step 5: Solve for x
    x = 306,737,476.46/28,288.67
  6. Step 6: Final answer
    x = 10,843.12

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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.