Home / 20,980.97-31,493.32-9,302.39

Finding the Fourth Proportional to 20,980.97, 31,493.32 and 9,302.39

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Solution

The fourth proportional to 20,980.97, 31,493.32 and 9,302.39 is: 13,963.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,980.97 : 31,493.32 = 9,302.39 : x
  2. Step 2: Convert to fraction form
    20,980.97/31,493.32 = 9,302.39/x
  3. Step 3: Cross multiply
    20,980.97x = 31,493.32 × 9,302.39
  4. Step 4: Simplify right side
    20,980.97x = 292,962,964.31
  5. Step 5: Solve for x
    x = 292,962,964.31/20,980.97
  6. Step 6: Final answer
    x = 13,963.27

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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.