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Finding the Fourth Proportional to 34,175.40, 51,207.90 and 19,340.20

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Solution

The fourth proportional to 34,175.40, 51,207.90 and 19,340.20 is: 28,979.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,175.40 : 51,207.90 = 19,340.20 : x
  2. Step 2: Convert to fraction form
    34,175.40/51,207.90 = 19,340.20/x
  3. Step 3: Cross multiply
    34,175.40x = 51,207.90 × 19,340.20
  4. Step 4: Simplify right side
    34,175.40x = 990,371,027.58
  5. Step 5: Solve for x
    x = 990,371,027.58/34,175.40
  6. Step 6: Final answer
    x = 28,979.06

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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.