Home / 20,886.88-31,322.60-9,042.38

Finding the Fourth Proportional to 20,886.88, 31,322.60 and 9,042.38

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Solution

The fourth proportional to 20,886.88, 31,322.60 and 9,042.38 is: 13,560.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,886.88 : 31,322.60 = 9,042.38 : x
  2. Step 2: Convert to fraction form
    20,886.88/31,322.60 = 9,042.38/x
  3. Step 3: Cross multiply
    20,886.88x = 31,322.60 × 9,042.38
  4. Step 4: Simplify right side
    20,886.88x = 283,230,863.99
  5. Step 5: Solve for x
    x = 283,230,863.99/20,886.88
  6. Step 6: Final answer
    x = 13,560.23

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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.