Home / 11,027.72-15,221.57-8,788.79

Finding the Fourth Proportional to 11,027.72, 15,221.57 and 8,788.79

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Solution

The fourth proportional to 11,027.72, 15,221.57 and 8,788.79 is: 12,131.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,027.72 : 15,221.57 = 8,788.79 : x
  2. Step 2: Convert to fraction form
    11,027.72/15,221.57 = 8,788.79/x
  3. Step 3: Cross multiply
    11,027.72x = 15,221.57 × 8,788.79
  4. Step 4: Simplify right side
    11,027.72x = 133,779,176.31
  5. Step 5: Solve for x
    x = 133,779,176.31/11,027.72
  6. Step 6: Final answer
    x = 12,131.17

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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.