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Finding the Fourth Proportional to 18,696.62, 28,044.68 and 4,656.76

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Solution

The fourth proportional to 18,696.62, 28,044.68 and 4,656.76 is: 6,985.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,696.62 : 28,044.68 = 4,656.76 : x
  2. Step 2: Convert to fraction form
    18,696.62/28,044.68 = 4,656.76/x
  3. Step 3: Cross multiply
    18,696.62x = 28,044.68 × 4,656.76
  4. Step 4: Simplify right side
    18,696.62x = 130,597,203.81
  5. Step 5: Solve for x
    x = 130,597,203.81/18,696.62
  6. Step 6: Final answer
    x = 6,985.07

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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.