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Finding the Fourth Proportional to 18,977.27, 28,460.90 and 5,646.67

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Solution

The fourth proportional to 18,977.27, 28,460.90 and 5,646.67 is: 8,468.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,977.27 : 28,460.90 = 5,646.67 : x
  2. Step 2: Convert to fraction form
    18,977.27/28,460.90 = 5,646.67/x
  3. Step 3: Cross multiply
    18,977.27x = 28,460.90 × 5,646.67
  4. Step 4: Simplify right side
    18,977.27x = 160,709,253.17
  5. Step 5: Solve for x
    x = 160,709,253.17/18,977.27
  6. Step 6: Final answer
    x = 8,468.51

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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.