Home / 12,438.52-17,166.78-7,132.30

Finding the Fourth Proportional to 12,438.52, 17,166.78 and 7,132.30

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Solution

The fourth proportional to 12,438.52, 17,166.78 and 7,132.30 is: 9,843.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,438.52 : 17,166.78 = 7,132.30 : x
  2. Step 2: Convert to fraction form
    12,438.52/17,166.78 = 7,132.30/x
  3. Step 3: Cross multiply
    12,438.52x = 17,166.78 × 7,132.30
  4. Step 4: Simplify right side
    12,438.52x = 122,438,624.99
  5. Step 5: Solve for x
    x = 122,438,624.99/12,438.52
  6. Step 6: Final answer
    x = 9,843.50

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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.