Home / 21,961.36-32,877.78-13,616.20

Finding the Fourth Proportional to 21,961.36, 32,877.78 and 13,616.20

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Solution

The fourth proportional to 21,961.36, 32,877.78 and 13,616.20 is: 20,384.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,961.36 : 32,877.78 = 13,616.20 : x
  2. Step 2: Convert to fraction form
    21,961.36/32,877.78 = 13,616.20/x
  3. Step 3: Cross multiply
    21,961.36x = 32,877.78 × 13,616.20
  4. Step 4: Simplify right side
    21,961.36x = 447,670,428.04
  5. Step 5: Solve for x
    x = 447,670,428.04/21,961.36
  6. Step 6: Final answer
    x = 20,384.46

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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.