Home / 21,081.84-31,631.94-9,996.36

Finding the Fourth Proportional to 21,081.84, 31,631.94 and 9,996.36

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Solution

The fourth proportional to 21,081.84, 31,631.94 and 9,996.36 is: 14,998.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,081.84 : 31,631.94 = 9,996.36 : x
  2. Step 2: Convert to fraction form
    21,081.84/31,631.94 = 9,996.36/x
  3. Step 3: Cross multiply
    21,081.84x = 31,631.94 × 9,996.36
  4. Step 4: Simplify right side
    21,081.84x = 316,204,259.74
  5. Step 5: Solve for x
    x = 316,204,259.74/21,081.84
  6. Step 6: Final answer
    x = 14,998.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.