Home / 19,122.57-28,679.52-7,272.10

Finding the Fourth Proportional to 19,122.57, 28,679.52 and 7,272.10

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Solution

The fourth proportional to 19,122.57, 28,679.52 and 7,272.10 is: 10,906.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,122.57 : 28,679.52 = 7,272.10 : x
  2. Step 2: Convert to fraction form
    19,122.57/28,679.52 = 7,272.10/x
  3. Step 3: Cross multiply
    19,122.57x = 28,679.52 × 7,272.10
  4. Step 4: Simplify right side
    19,122.57x = 208,560,337.39
  5. Step 5: Solve for x
    x = 208,560,337.39/19,122.57
  6. Step 6: Final answer
    x = 10,906.50

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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.