Home / 11,171.52-16,691.40-10,783.80

Finding the Fourth Proportional to 11,171.52, 16,691.40 and 10,783.80

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Solution

The fourth proportional to 11,171.52, 16,691.40 and 10,783.80 is: 16,112.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,171.52 : 16,691.40 = 10,783.80 : x
  2. Step 2: Convert to fraction form
    11,171.52/16,691.40 = 10,783.80/x
  3. Step 3: Cross multiply
    11,171.52x = 16,691.40 × 10,783.80
  4. Step 4: Simplify right side
    11,171.52x = 179,996,719.32
  5. Step 5: Solve for x
    x = 179,996,719.32/11,171.52
  6. Step 6: Final answer
    x = 16,112.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.