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Finding the Fourth Proportional to 15,873.51, 21,906.17 and 9,068.13

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Solution

The fourth proportional to 15,873.51, 21,906.17 and 9,068.13 is: 12,514.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,873.51 : 21,906.17 = 9,068.13 : x
  2. Step 2: Convert to fraction form
    15,873.51/21,906.17 = 9,068.13/x
  3. Step 3: Cross multiply
    15,873.51x = 21,906.17 × 9,068.13
  4. Step 4: Simplify right side
    15,873.51x = 198,647,952.02
  5. Step 5: Solve for x
    x = 198,647,952.02/15,873.51
  6. Step 6: Final answer
    x = 12,514.43

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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.