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Finding the Fourth Proportional to 34,490.82, 51,745.78 and 13,728.90

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Solution

The fourth proportional to 34,490.82, 51,745.78 and 13,728.90 is: 20,597.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,490.82 : 51,745.78 = 13,728.90 : x
  2. Step 2: Convert to fraction form
    34,490.82/51,745.78 = 13,728.90/x
  3. Step 3: Cross multiply
    34,490.82x = 51,745.78 × 13,728.90
  4. Step 4: Simplify right side
    34,490.82x = 710,412,639.04
  5. Step 5: Solve for x
    x = 710,412,639.04/34,490.82
  6. Step 6: Final answer
    x = 20,597.15

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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.