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Finding the Fourth Proportional to 18,889.71, 26,068.68 and 10,930.39

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Solution

The fourth proportional to 18,889.71, 26,068.68 and 10,930.39 is: 15,084.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,889.71 : 26,068.68 = 10,930.39 : x
  2. Step 2: Convert to fraction form
    18,889.71/26,068.68 = 10,930.39/x
  3. Step 3: Cross multiply
    18,889.71x = 26,068.68 × 10,930.39
  4. Step 4: Simplify right side
    18,889.71x = 284,940,784.53
  5. Step 5: Solve for x
    x = 284,940,784.53/18,889.71
  6. Step 6: Final answer
    x = 15,084.44

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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.