Home / 20,896.34-31,284.30-13,883.36

Finding the Fourth Proportional to 20,896.34, 31,284.30 and 13,883.36

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Solution

The fourth proportional to 20,896.34, 31,284.30 and 13,883.36 is: 20,785.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,896.34 : 31,284.30 = 13,883.36 : x
  2. Step 2: Convert to fraction form
    20,896.34/31,284.30 = 13,883.36/x
  3. Step 3: Cross multiply
    20,896.34x = 31,284.30 × 13,883.36
  4. Step 4: Simplify right side
    20,896.34x = 434,331,199.25
  5. Step 5: Solve for x
    x = 434,331,199.25/20,896.34
  6. Step 6: Final answer
    x = 20,785.04

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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.