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Finding the Fourth Proportional to 28,499.25, 42,746.84 and 8,775.75

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Solution

The fourth proportional to 28,499.25, 42,746.84 and 8,775.75 is: 13,162.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,499.25 : 42,746.84 = 8,775.75 : x
  2. Step 2: Convert to fraction form
    28,499.25/42,746.84 = 8,775.75/x
  3. Step 3: Cross multiply
    28,499.25x = 42,746.84 × 8,775.75
  4. Step 4: Simplify right side
    28,499.25x = 375,135,367.40
  5. Step 5: Solve for x
    x = 375,135,367.40/28,499.25
  6. Step 6: Final answer
    x = 13,162.99

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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.