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Finding the Fourth Proportional to 18,345.84, 27,509.86 and 8,974.88

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Solution

The fourth proportional to 18,345.84, 27,509.86 and 8,974.88 is: 13,457.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,345.84 : 27,509.86 = 8,974.88 : x
  2. Step 2: Convert to fraction form
    18,345.84/27,509.86 = 8,974.88/x
  3. Step 3: Cross multiply
    18,345.84x = 27,509.86 × 8,974.88
  4. Step 4: Simplify right side
    18,345.84x = 246,897,823.89
  5. Step 5: Solve for x
    x = 246,897,823.89/18,345.84
  6. Step 6: Final answer
    x = 13,457.97

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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.