Home / 11,138.08-16,705.24-5,215.60

Finding the Fourth Proportional to 11,138.08, 16,705.24 and 5,215.60

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Solution

The fourth proportional to 11,138.08, 16,705.24 and 5,215.60 is: 7,822.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,138.08 : 16,705.24 = 5,215.60 : x
  2. Step 2: Convert to fraction form
    11,138.08/16,705.24 = 5,215.60/x
  3. Step 3: Cross multiply
    11,138.08x = 16,705.24 × 5,215.60
  4. Step 4: Simplify right side
    11,138.08x = 87,127,849.74
  5. Step 5: Solve for x
    x = 87,127,849.74/11,138.08
  6. Step 6: Final answer
    x = 7,822.52

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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.