Home / 21,943.40-32,939.40-13,632.80

Finding the Fourth Proportional to 21,943.40, 32,939.40 and 13,632.80

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Solution

The fourth proportional to 21,943.40, 32,939.40 and 13,632.80 is: 20,464.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,943.40 : 32,939.40 = 13,632.80 : x
  2. Step 2: Convert to fraction form
    21,943.40/32,939.40 = 13,632.80/x
  3. Step 3: Cross multiply
    21,943.40x = 32,939.40 × 13,632.80
  4. Step 4: Simplify right side
    21,943.40x = 449,056,252.32
  5. Step 5: Solve for x
    x = 449,056,252.32/21,943.40
  6. Step 6: Final answer
    x = 20,464.30

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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.