Home / 20,156.84-27,815.22-11,204.03

Finding the Fourth Proportional to 20,156.84, 27,815.22 and 11,204.03

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Solution

The fourth proportional to 20,156.84, 27,815.22 and 11,204.03 is: 15,460.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,156.84 : 27,815.22 = 11,204.03 : x
  2. Step 2: Convert to fraction form
    20,156.84/27,815.22 = 11,204.03/x
  3. Step 3: Cross multiply
    20,156.84x = 27,815.22 × 11,204.03
  4. Step 4: Simplify right side
    20,156.84x = 311,642,420.26
  5. Step 5: Solve for x
    x = 311,642,420.26/20,156.84
  6. Step 6: Final answer
    x = 15,460.88

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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.