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Finding the Fourth Proportional to 34,258.80, 51,388.20 and 12,097.20

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Solution

The fourth proportional to 34,258.80, 51,388.20 and 12,097.20 is: 18,145.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,258.80 : 51,388.20 = 12,097.20 : x
  2. Step 2: Convert to fraction form
    34,258.80/51,388.20 = 12,097.20/x
  3. Step 3: Cross multiply
    34,258.80x = 51,388.20 × 12,097.20
  4. Step 4: Simplify right side
    34,258.80x = 621,653,333.04
  5. Step 5: Solve for x
    x = 621,653,333.04/34,258.80
  6. Step 6: Final answer
    x = 18,145.80

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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.