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Finding the Fourth Proportional to 34,172.60, 51,258.90 and 20,982.20

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Solution

The fourth proportional to 34,172.60, 51,258.90 and 20,982.20 is: 31,473.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,172.60 : 51,258.90 = 20,982.20 : x
  2. Step 2: Convert to fraction form
    34,172.60/51,258.90 = 20,982.20/x
  3. Step 3: Cross multiply
    34,172.60x = 51,258.90 × 20,982.20
  4. Step 4: Simplify right side
    34,172.60x = 1,075,524,491.58
  5. Step 5: Solve for x
    x = 1,075,524,491.58/34,172.60
  6. Step 6: Final answer
    x = 31,473.30

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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.