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Finding the Fourth Proportional to 28,241.00, 38,972.87 and 15,494.21

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Solution

The fourth proportional to 28,241.00, 38,972.87 and 15,494.21 is: 21,382.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,241.00 : 38,972.87 = 15,494.21 : x
  2. Step 2: Convert to fraction form
    28,241.00/38,972.87 = 15,494.21/x
  3. Step 3: Cross multiply
    28,241.00x = 38,972.87 × 15,494.21
  4. Step 4: Simplify right side
    28,241.00x = 603,853,675.95
  5. Step 5: Solve for x
    x = 603,853,675.95/28,241.00
  6. Step 6: Final answer
    x = 21,382.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.