Home / 15,164.54-20,902.82-10,118.78

Finding the Fourth Proportional to 15,164.54, 20,902.82 and 10,118.78

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Solution

The fourth proportional to 15,164.54, 20,902.82 and 10,118.78 is: 13,947.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,164.54 : 20,902.82 = 10,118.78 : x
  2. Step 2: Convert to fraction form
    15,164.54/20,902.82 = 10,118.78/x
  3. Step 3: Cross multiply
    15,164.54x = 20,902.82 × 10,118.78
  4. Step 4: Simplify right side
    15,164.54x = 211,511,036.96
  5. Step 5: Solve for x
    x = 211,511,036.96/15,164.54
  6. Step 6: Final answer
    x = 13,947.74

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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.