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Finding the Fourth Proportional to 18,111.84, 27,164.84 and 4,961.14

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Solution

The fourth proportional to 18,111.84, 27,164.84 and 4,961.14 is: 7,440.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,111.84 : 27,164.84 = 4,961.14 : x
  2. Step 2: Convert to fraction form
    18,111.84/27,164.84 = 4,961.14/x
  3. Step 3: Cross multiply
    18,111.84x = 27,164.84 × 4,961.14
  4. Step 4: Simplify right side
    18,111.84x = 134,768,574.32
  5. Step 5: Solve for x
    x = 134,768,574.32/18,111.84
  6. Step 6: Final answer
    x = 7,440.91

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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.