Home / 12,145.21-18,214.40-7,696.25

Finding the Fourth Proportional to 12,145.21, 18,214.40 and 7,696.25

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Solution

The fourth proportional to 12,145.21, 18,214.40 and 7,696.25 is: 11,542.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,145.21 : 18,214.40 = 7,696.25 : x
  2. Step 2: Convert to fraction form
    12,145.21/18,214.40 = 7,696.25/x
  3. Step 3: Cross multiply
    12,145.21x = 18,214.40 × 7,696.25
  4. Step 4: Simplify right side
    12,145.21x = 140,182,572.47
  5. Step 5: Solve for x
    x = 140,182,572.47/12,145.21
  6. Step 6: Final answer
    x = 11,542.21

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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.