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Finding the Fourth Proportional to 18,652.96, 27,981.27 and 5,509.09

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Solution

The fourth proportional to 18,652.96, 27,981.27 and 5,509.09 is: 8,264.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,652.96 : 27,981.27 = 5,509.09 : x
  2. Step 2: Convert to fraction form
    18,652.96/27,981.27 = 5,509.09/x
  3. Step 3: Cross multiply
    18,652.96x = 27,981.27 × 5,509.09
  4. Step 4: Simplify right side
    18,652.96x = 154,151,369.72
  5. Step 5: Solve for x
    x = 154,151,369.72/18,652.96
  6. Step 6: Final answer
    x = 8,264.18

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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.