Home / 15,909.52-21,955.80-8,836

Finding the Fourth Proportional to 15,909.52, 21,955.80 and 8,836

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Solution

The fourth proportional to 15,909.52, 21,955.80 and 8,836 is: 12,194.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,909.52 : 21,955.80 = 8,836 : x
  2. Step 2: Convert to fraction form
    15,909.52/21,955.80 = 8,836/x
  3. Step 3: Cross multiply
    15,909.52x = 21,955.80 × 8,836
  4. Step 4: Simplify right side
    15,909.52x = 194,001,448.80
  5. Step 5: Solve for x
    x = 194,001,448.80/15,909.52
  6. Step 6: Final answer
    x = 12,194.05

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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.