Home / 20,901.38-31,362.84-13,886.24

Finding the Fourth Proportional to 20,901.38, 31,362.84 and 13,886.24

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Solution

The fourth proportional to 20,901.38, 31,362.84 and 13,886.24 is: 20,836.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,901.38 : 31,362.84 = 13,886.24 : x
  2. Step 2: Convert to fraction form
    20,901.38/31,362.84 = 13,886.24/x
  3. Step 3: Cross multiply
    20,901.38x = 31,362.84 × 13,886.24
  4. Step 4: Simplify right side
    20,901.38x = 435,511,766.51
  5. Step 5: Solve for x
    x = 435,511,766.51/20,901.38
  6. Step 6: Final answer
    x = 20,836.51

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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.