Home / 21,424.59-29,563.65-11,991.33

Finding the Fourth Proportional to 21,424.59, 29,563.65 and 11,991.33

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Solution

The fourth proportional to 21,424.59, 29,563.65 and 11,991.33 is: 16,546.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,424.59 : 29,563.65 = 11,991.33 : x
  2. Step 2: Convert to fraction form
    21,424.59/29,563.65 = 11,991.33/x
  3. Step 3: Cross multiply
    21,424.59x = 29,563.65 × 11,991.33
  4. Step 4: Simplify right side
    21,424.59x = 354,507,483.15
  5. Step 5: Solve for x
    x = 354,507,483.15/21,424.59
  6. Step 6: Final answer
    x = 16,546.76

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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.