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Finding the Fourth Proportional to 28,114.92, 38,766.94 and 19,167.64

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Solution

The fourth proportional to 28,114.92, 38,766.94 and 19,167.64 is: 26,429.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,114.92 : 38,766.94 = 19,167.64 : x
  2. Step 2: Convert to fraction form
    28,114.92/38,766.94 = 19,167.64/x
  3. Step 3: Cross multiply
    28,114.92x = 38,766.94 × 19,167.64
  4. Step 4: Simplify right side
    28,114.92x = 743,070,749.82
  5. Step 5: Solve for x
    x = 743,070,749.82/28,114.92
  6. Step 6: Final answer
    x = 26,429.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.