Home / 28,288.22-42,432.33-7,511.72

Finding the Fourth Proportional to 28,288.22, 42,432.33 and 7,511.72

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Solution

The fourth proportional to 28,288.22, 42,432.33 and 7,511.72 is: 11,267.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,288.22 : 42,432.33 = 7,511.72 : x
  2. Step 2: Convert to fraction form
    28,288.22/42,432.33 = 7,511.72/x
  3. Step 3: Cross multiply
    28,288.22x = 42,432.33 × 7,511.72
  4. Step 4: Simplify right side
    28,288.22x = 318,739,569.75
  5. Step 5: Solve for x
    x = 318,739,569.75/28,288.22
  6. Step 6: Final answer
    x = 11,267.57

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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.