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Finding the Fourth Proportional to 18,822.71, 28,249.59 and 9,465.39

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Solution

The fourth proportional to 18,822.71, 28,249.59 and 9,465.39 is: 14,205.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,822.71 : 28,249.59 = 9,465.39 : x
  2. Step 2: Convert to fraction form
    18,822.71/28,249.59 = 9,465.39/x
  3. Step 3: Cross multiply
    18,822.71x = 28,249.59 × 9,465.39
  4. Step 4: Simplify right side
    18,822.71x = 267,393,386.69
  5. Step 5: Solve for x
    x = 267,393,386.69/18,822.71
  6. Step 6: Final answer
    x = 14,205.90

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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.