Home / 13,524.78-20,290.35-4,290.78

Finding the Fourth Proportional to 13,524.78, 20,290.35 and 4,290.78

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Solution

The fourth proportional to 13,524.78, 20,290.35 and 4,290.78 is: 6,437.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,524.78 : 20,290.35 = 4,290.78 : x
  2. Step 2: Convert to fraction form
    13,524.78/20,290.35 = 4,290.78/x
  3. Step 3: Cross multiply
    13,524.78x = 20,290.35 × 4,290.78
  4. Step 4: Simplify right side
    13,524.78x = 87,061,427.97
  5. Step 5: Solve for x
    x = 87,061,427.97/13,524.78
  6. Step 6: Final answer
    x = 6,437.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.