Home / 20,799.78-31,166.79-16,885.05

Finding the Fourth Proportional to 20,799.78, 31,166.79 and 16,885.05

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Solution

The fourth proportional to 20,799.78, 31,166.79 and 16,885.05 is: 25,300.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,799.78 : 31,166.79 = 16,885.05 : x
  2. Step 2: Convert to fraction form
    20,799.78/31,166.79 = 16,885.05/x
  3. Step 3: Cross multiply
    20,799.78x = 31,166.79 × 16,885.05
  4. Step 4: Simplify right side
    20,799.78x = 526,252,807.49
  5. Step 5: Solve for x
    x = 526,252,807.49/20,799.78
  6. Step 6: Final answer
    x = 25,300.88

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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.