Home / 28,272.20-42,408.30-7,495.70

Finding the Fourth Proportional to 28,272.20, 42,408.30 and 7,495.70

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Solution

The fourth proportional to 28,272.20, 42,408.30 and 7,495.70 is: 11,243.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,272.20 : 42,408.30 = 7,495.70 : x
  2. Step 2: Convert to fraction form
    28,272.20/42,408.30 = 7,495.70/x
  3. Step 3: Cross multiply
    28,272.20x = 42,408.30 × 7,495.70
  4. Step 4: Simplify right side
    28,272.20x = 317,879,894.31
  5. Step 5: Solve for x
    x = 317,879,894.31/28,272.20
  6. Step 6: Final answer
    x = 11,243.55

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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.