Home / 20,901.44-31,362.88-13,886.28

Finding the Fourth Proportional to 20,901.44, 31,362.88 and 13,886.28

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Solution

The fourth proportional to 20,901.44, 31,362.88 and 13,886.28 is: 20,836.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,901.44 : 31,362.88 = 13,886.28 : x
  2. Step 2: Convert to fraction form
    20,901.44/31,362.88 = 13,886.28/x
  3. Step 3: Cross multiply
    20,901.44x = 31,362.88 × 13,886.28
  4. Step 4: Simplify right side
    20,901.44x = 435,513,733.29
  5. Step 5: Solve for x
    x = 435,513,733.29/20,901.44
  6. Step 6: Final answer
    x = 20,836.54

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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.