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Finding the Fourth Proportional to 21,936.70, 32,856.45 and 18,048.70

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Solution

The fourth proportional to 21,936.70, 32,856.45 and 18,048.70 is: 27,033.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,936.70 : 32,856.45 = 18,048.70 : x
  2. Step 2: Convert to fraction form
    21,936.70/32,856.45 = 18,048.70/x
  3. Step 3: Cross multiply
    21,936.70x = 32,856.45 × 18,048.70
  4. Step 4: Simplify right side
    21,936.70x = 593,016,209.12
  5. Step 5: Solve for x
    x = 593,016,209.12/21,936.70
  6. Step 6: Final answer
    x = 27,033.06

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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.