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Finding the Fourth Proportional to 19,321.97, 28,963.34 and 10,984.76

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Solution

The fourth proportional to 19,321.97, 28,963.34 and 10,984.76 is: 16,465.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,321.97 : 28,963.34 = 10,984.76 : x
  2. Step 2: Convert to fraction form
    19,321.97/28,963.34 = 10,984.76/x
  3. Step 3: Cross multiply
    19,321.97x = 28,963.34 × 10,984.76
  4. Step 4: Simplify right side
    19,321.97x = 318,155,338.70
  5. Step 5: Solve for x
    x = 318,155,338.70/19,321.97
  6. Step 6: Final answer
    x = 16,465.99

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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.