Home / 20,171.84-27,837.27-11,219.72

Finding the Fourth Proportional to 20,171.84, 27,837.27 and 11,219.72

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Solution

The fourth proportional to 20,171.84, 27,837.27 and 11,219.72 is: 15,483.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,171.84 : 27,837.27 = 11,219.72 : x
  2. Step 2: Convert to fraction form
    20,171.84/27,837.27 = 11,219.72/x
  3. Step 3: Cross multiply
    20,171.84x = 27,837.27 × 11,219.72
  4. Step 4: Simplify right side
    20,171.84x = 312,326,235.78
  5. Step 5: Solve for x
    x = 312,326,235.78/20,171.84
  6. Step 6: Final answer
    x = 15,483.28

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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.