Home / 28,122.30-42,183.05-7,345.80

Finding the Fourth Proportional to 28,122.30, 42,183.05 and 7,345.80

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Solution

The fourth proportional to 28,122.30, 42,183.05 and 7,345.80 is: 11,018.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,122.30 : 42,183.05 = 7,345.80 : x
  2. Step 2: Convert to fraction form
    28,122.30/42,183.05 = 7,345.80/x
  3. Step 3: Cross multiply
    28,122.30x = 42,183.05 × 7,345.80
  4. Step 4: Simplify right side
    28,122.30x = 309,868,211.96
  5. Step 5: Solve for x
    x = 309,868,211.96/28,122.30
  6. Step 6: Final answer
    x = 11,018.59

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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.