Home / 20,866.21-31,299.63-11,504.47

Finding the Fourth Proportional to 20,866.21, 31,299.63 and 11,504.47

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Solution

The fourth proportional to 20,866.21, 31,299.63 and 11,504.47 is: 17,256.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,866.21 : 31,299.63 = 11,504.47 : x
  2. Step 2: Convert to fraction form
    20,866.21/31,299.63 = 11,504.47/x
  3. Step 3: Cross multiply
    20,866.21x = 31,299.63 × 11,504.47
  4. Step 4: Simplify right side
    20,866.21x = 360,085,654.35
  5. Step 5: Solve for x
    x = 360,085,654.35/20,866.21
  6. Step 6: Final answer
    x = 17,256.88

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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.