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Finding the Fourth Proportional to 27,998.60, 42,257.15 and 27,998.60

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Solution

The fourth proportional to 27,998.60, 42,257.15 and 27,998.60 is: 42,257.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,998.60 : 42,257.15 = 27,998.60 : x
  2. Step 2: Convert to fraction form
    27,998.60/42,257.15 = 27,998.60/x
  3. Step 3: Cross multiply
    27,998.60x = 42,257.15 × 27,998.60
  4. Step 4: Simplify right side
    27,998.60x = 1,183,141,039.99
  5. Step 5: Solve for x
    x = 1,183,141,039.99/27,998.60
  6. Step 6: Final answer
    x = 42,257.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.