Home / 13,126.05-19,651.28-12,203.55

Finding the Fourth Proportional to 13,126.05, 19,651.28 and 12,203.55

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Solution

The fourth proportional to 13,126.05, 19,651.28 and 12,203.55 is: 18,270.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,126.05 : 19,651.28 = 12,203.55 : x
  2. Step 2: Convert to fraction form
    13,126.05/19,651.28 = 12,203.55/x
  3. Step 3: Cross multiply
    13,126.05x = 19,651.28 × 12,203.55
  4. Step 4: Simplify right side
    13,126.05x = 239,815,317.03
  5. Step 5: Solve for x
    x = 239,815,317.03/13,126.05
  6. Step 6: Final answer
    x = 18,270.18

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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.