Home / 15,972.82-21,994.95-15,618.79

Finding the Fourth Proportional to 15,972.82, 21,994.95 and 15,618.79

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Solution

The fourth proportional to 15,972.82, 21,994.95 and 15,618.79 is: 21,507.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,972.82 : 21,994.95 = 15,618.79 : x
  2. Step 2: Convert to fraction form
    15,972.82/21,994.95 = 15,618.79/x
  3. Step 3: Cross multiply
    15,972.82x = 21,994.95 × 15,618.79
  4. Step 4: Simplify right side
    15,972.82x = 343,534,505.11
  5. Step 5: Solve for x
    x = 343,534,505.11/15,972.82
  6. Step 6: Final answer
    x = 21,507.44

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Similar ratio
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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.