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Finding the Fourth Proportional to 17,288.70, 25,929.45 and 7,428.30

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Solution

The fourth proportional to 17,288.70, 25,929.45 and 7,428.30 is: 11,140.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,288.70 : 25,929.45 = 7,428.30 : x
  2. Step 2: Convert to fraction form
    17,288.70/25,929.45 = 7,428.30/x
  3. Step 3: Cross multiply
    17,288.70x = 25,929.45 × 7,428.30
  4. Step 4: Simplify right side
    17,288.70x = 192,611,733.44
  5. Step 5: Solve for x
    x = 192,611,733.44/17,288.70
  6. Step 6: Final answer
    x = 11,140.90

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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.