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Finding the Fourth Proportional to 15,998.91, 22,080.21 and 8,927.79

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Solution

The fourth proportional to 15,998.91, 22,080.21 and 8,927.79 is: 12,321.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,998.91 : 22,080.21 = 8,927.79 : x
  2. Step 2: Convert to fraction form
    15,998.91/22,080.21 = 8,927.79/x
  3. Step 3: Cross multiply
    15,998.91x = 22,080.21 × 8,927.79
  4. Step 4: Simplify right side
    15,998.91x = 197,127,478.04
  5. Step 5: Solve for x
    x = 197,127,478.04/15,998.91
  6. Step 6: Final answer
    x = 12,321.31

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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.