Home / 20,964.10-31,436.92-11,101.08

Finding the Fourth Proportional to 20,964.10, 31,436.92 and 11,101.08

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Solution

The fourth proportional to 20,964.10, 31,436.92 and 11,101.08 is: 16,646.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,964.10 : 31,436.92 = 11,101.08 : x
  2. Step 2: Convert to fraction form
    20,964.10/31,436.92 = 11,101.08/x
  3. Step 3: Cross multiply
    20,964.10x = 31,436.92 × 11,101.08
  4. Step 4: Simplify right side
    20,964.10x = 348,983,763.87
  5. Step 5: Solve for x
    x = 348,983,763.87/20,964.10
  6. Step 6: Final answer
    x = 16,646.73

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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.