Home / 28,241.16-38,972.82-15,665.91

Finding the Fourth Proportional to 28,241.16, 38,972.82 and 15,665.91

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Solution

The fourth proportional to 28,241.16, 38,972.82 and 15,665.91 is: 21,618.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,241.16 : 38,972.82 = 15,665.91 : x
  2. Step 2: Convert to fraction form
    28,241.16/38,972.82 = 15,665.91/x
  3. Step 3: Cross multiply
    28,241.16x = 38,972.82 × 15,665.91
  4. Step 4: Simplify right side
    28,241.16x = 610,544,690.57
  5. Step 5: Solve for x
    x = 610,544,690.57/28,241.16
  6. Step 6: Final answer
    x = 21,618.97

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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.