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Finding the Fourth Proportional to 13,073.78, 19,610.40 and 8,859.02

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Solution

The fourth proportional to 13,073.78, 19,610.40 and 8,859.02 is: 13,288.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,073.78 : 19,610.40 = 8,859.02 : x
  2. Step 2: Convert to fraction form
    13,073.78/19,610.40 = 8,859.02/x
  3. Step 3: Cross multiply
    13,073.78x = 19,610.40 × 8,859.02
  4. Step 4: Simplify right side
    13,073.78x = 173,728,860.98
  5. Step 5: Solve for x
    x = 173,728,860.98/13,073.78
  6. Step 6: Final answer
    x = 13,288.34

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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.