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Finding the Fourth Proportional to 18,585.77, 27,879.59 and 7,491

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Solution

The fourth proportional to 18,585.77, 27,879.59 and 7,491 is: 11,236.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,585.77 : 27,879.59 = 7,491 : x
  2. Step 2: Convert to fraction form
    18,585.77/27,879.59 = 7,491/x
  3. Step 3: Cross multiply
    18,585.77x = 27,879.59 × 7,491
  4. Step 4: Simplify right side
    18,585.77x = 208,845,971.24
  5. Step 5: Solve for x
    x = 208,845,971.24/18,585.77
  6. Step 6: Final answer
    x = 11,236.88

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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.