Home / 21,331.87-29,435.93-11,901.04

Finding the Fourth Proportional to 21,331.87, 29,435.93 and 11,901.04

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Solution

The fourth proportional to 21,331.87, 29,435.93 and 11,901.04 is: 16,422.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,331.87 : 29,435.93 = 11,901.04 : x
  2. Step 2: Convert to fraction form
    21,331.87/29,435.93 = 11,901.04/x
  3. Step 3: Cross multiply
    21,331.87x = 29,435.93 × 11,901.04
  4. Step 4: Simplify right side
    21,331.87x = 350,318,180.37
  5. Step 5: Solve for x
    x = 350,318,180.37/21,331.87
  6. Step 6: Final answer
    x = 16,422.29

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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.