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Finding the Fourth Proportional to 12,876.63, 17,730.25 and 11,274.11

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Solution

The fourth proportional to 12,876.63, 17,730.25 and 11,274.11 is: 15,523.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,876.63 : 17,730.25 = 11,274.11 : x
  2. Step 2: Convert to fraction form
    12,876.63/17,730.25 = 11,274.11/x
  3. Step 3: Cross multiply
    12,876.63x = 17,730.25 × 11,274.11
  4. Step 4: Simplify right side
    12,876.63x = 199,892,788.83
  5. Step 5: Solve for x
    x = 199,892,788.83/12,876.63
  6. Step 6: Final answer
    x = 15,523.69

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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.