Home / 12,455.76-17,188.94-7,150.90

Finding the Fourth Proportional to 12,455.76, 17,188.94 and 7,150.90

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Solution

The fourth proportional to 12,455.76, 17,188.94 and 7,150.90 is: 9,868.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,455.76 : 17,188.94 = 7,150.90 : x
  2. Step 2: Convert to fraction form
    12,455.76/17,188.94 = 7,150.90/x
  3. Step 3: Cross multiply
    12,455.76x = 17,188.94 × 7,150.90
  4. Step 4: Simplify right side
    12,455.76x = 122,916,391.05
  5. Step 5: Solve for x
    x = 122,916,391.05/12,455.76
  6. Step 6: Final answer
    x = 9,868.24

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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.