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Finding the Fourth Proportional to 18,904.83, 26,084.21 and 15,891.41

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Solution

The fourth proportional to 18,904.83, 26,084.21 and 15,891.41 is: 21,926.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,904.83 : 26,084.21 = 15,891.41 : x
  2. Step 2: Convert to fraction form
    18,904.83/26,084.21 = 15,891.41/x
  3. Step 3: Cross multiply
    18,904.83x = 26,084.21 × 15,891.41
  4. Step 4: Simplify right side
    18,904.83x = 414,514,665.76
  5. Step 5: Solve for x
    x = 414,514,665.76/18,904.83
  6. Step 6: Final answer
    x = 21,926.39

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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.