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Finding the Fourth Proportional to 18,810.82, 25,933.53 and 15,612.54

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Solution

The fourth proportional to 18,810.82, 25,933.53 and 15,612.54 is: 21,524.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,810.82 : 25,933.53 = 15,612.54 : x
  2. Step 2: Convert to fraction form
    18,810.82/25,933.53 = 15,612.54/x
  3. Step 3: Cross multiply
    18,810.82x = 25,933.53 × 15,612.54
  4. Step 4: Simplify right side
    18,810.82x = 404,888,274.47
  5. Step 5: Solve for x
    x = 404,888,274.47/18,810.82
  6. Step 6: Final answer
    x = 21,524.22

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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.