Home / 21,991.72-33,001.08-18,339.16

Finding the Fourth Proportional to 21,991.72, 33,001.08 and 18,339.16

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Solution

The fourth proportional to 21,991.72, 33,001.08 and 18,339.16 is: 27,520.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,991.72 : 33,001.08 = 18,339.16 : x
  2. Step 2: Convert to fraction form
    21,991.72/33,001.08 = 18,339.16/x
  3. Step 3: Cross multiply
    21,991.72x = 33,001.08 × 18,339.16
  4. Step 4: Simplify right side
    21,991.72x = 605,212,086.29
  5. Step 5: Solve for x
    x = 605,212,086.29/21,991.72
  6. Step 6: Final answer
    x = 27,520.00

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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.