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Finding the Fourth Proportional to 18,977.88, 28,468.18 and 5,468.50

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Solution

The fourth proportional to 18,977.88, 28,468.18 and 5,468.50 is: 8,203.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,977.88 : 28,468.18 = 5,468.50 : x
  2. Step 2: Convert to fraction form
    18,977.88/28,468.18 = 5,468.50/x
  3. Step 3: Cross multiply
    18,977.88x = 28,468.18 × 5,468.50
  4. Step 4: Simplify right side
    18,977.88x = 155,678,099.99
  5. Step 5: Solve for x
    x = 155,678,099.99/18,977.88
  6. Step 6: Final answer
    x = 8,203.13

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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.