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Finding the Fourth Proportional to 18,579.77, 27,873.74 and 5,432.25

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Solution

The fourth proportional to 18,579.77, 27,873.74 and 5,432.25 is: 8,149.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,579.77 : 27,873.74 = 5,432.25 : x
  2. Step 2: Convert to fraction form
    18,579.77/27,873.74 = 5,432.25/x
  3. Step 3: Cross multiply
    18,579.77x = 27,873.74 × 5,432.25
  4. Step 4: Simplify right side
    18,579.77x = 151,417,124.12
  5. Step 5: Solve for x
    x = 151,417,124.12/18,579.77
  6. Step 6: Final answer
    x = 8,149.57

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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.