Home / 20,196.58-27,875.37-11,815.78

Finding the Fourth Proportional to 20,196.58, 27,875.37 and 11,815.78

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Solution

The fourth proportional to 20,196.58, 27,875.37 and 11,815.78 is: 16,308.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,196.58 : 27,875.37 = 11,815.78 : x
  2. Step 2: Convert to fraction form
    20,196.58/27,875.37 = 11,815.78/x
  3. Step 3: Cross multiply
    20,196.58x = 27,875.37 × 11,815.78
  4. Step 4: Simplify right side
    20,196.58x = 329,369,239.34
  5. Step 5: Solve for x
    x = 329,369,239.34/20,196.58
  6. Step 6: Final answer
    x = 16,308.17

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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.