Home / 9,115.10-13,658.27-6,638.52

Finding the Fourth Proportional to 9,115.10, 13,658.27 and 6,638.52

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Solution

The fourth proportional to 9,115.10, 13,658.27 and 6,638.52 is: 9,947.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,115.10 : 13,658.27 = 6,638.52 : x
  2. Step 2: Convert to fraction form
    9,115.10/13,658.27 = 6,638.52/x
  3. Step 3: Cross multiply
    9,115.10x = 13,658.27 × 6,638.52
  4. Step 4: Simplify right side
    9,115.10x = 90,670,665.37
  5. Step 5: Solve for x
    x = 90,670,665.37/9,115.10
  6. Step 6: Final answer
    x = 9,947.31

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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.