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Finding the Fourth Proportional to 15,003.78, 22,519.81 and 7,613.55

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Solution

The fourth proportional to 15,003.78, 22,519.81 and 7,613.55 is: 11,427.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,003.78 : 22,519.81 = 7,613.55 : x
  2. Step 2: Convert to fraction form
    15,003.78/22,519.81 = 7,613.55/x
  3. Step 3: Cross multiply
    15,003.78x = 22,519.81 × 7,613.55
  4. Step 4: Simplify right side
    15,003.78x = 171,455,699.43
  5. Step 5: Solve for x
    x = 171,455,699.43/15,003.78
  6. Step 6: Final answer
    x = 11,427.50

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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.