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Finding the Fourth Proportional to 11,713.52, 17,555.16 and 4,779.92

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Solution

The fourth proportional to 11,713.52, 17,555.16 and 4,779.92 is: 7,163.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,713.52 : 17,555.16 = 4,779.92 : x
  2. Step 2: Convert to fraction form
    11,713.52/17,555.16 = 4,779.92/x
  3. Step 3: Cross multiply
    11,713.52x = 17,555.16 × 4,779.92
  4. Step 4: Simplify right side
    11,713.52x = 83,912,260.39
  5. Step 5: Solve for x
    x = 83,912,260.39/11,713.52
  6. Step 6: Final answer
    x = 7,163.71

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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.