Home / 15,249.40-21,042.78-8,535.16

Finding the Fourth Proportional to 15,249.40, 21,042.78 and 8,535.16

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Solution

The fourth proportional to 15,249.40, 21,042.78 and 8,535.16 is: 11,777.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,249.40 : 21,042.78 = 8,535.16 : x
  2. Step 2: Convert to fraction form
    15,249.40/21,042.78 = 8,535.16/x
  3. Step 3: Cross multiply
    15,249.40x = 21,042.78 × 8,535.16
  4. Step 4: Simplify right side
    15,249.40x = 179,603,494.14
  5. Step 5: Solve for x
    x = 179,603,494.14/15,249.40
  6. Step 6: Final answer
    x = 11,777.74

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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.