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Finding the Fourth Proportional to 18,647.84, 27,971.85 and 7,554.74

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Solution

The fourth proportional to 18,647.84, 27,971.85 and 7,554.74 is: 11,332.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,647.84 : 27,971.85 = 7,554.74 : x
  2. Step 2: Convert to fraction form
    18,647.84/27,971.85 = 7,554.74/x
  3. Step 3: Cross multiply
    18,647.84x = 27,971.85 × 7,554.74
  4. Step 4: Simplify right side
    18,647.84x = 211,320,016.30
  5. Step 5: Solve for x
    x = 211,320,016.30/18,647.84
  6. Step 6: Final answer
    x = 11,332.14

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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.