Home / 20,994.20-31,496.76-9,304.64

Finding the Fourth Proportional to 20,994.20, 31,496.76 and 9,304.64

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Solution

The fourth proportional to 20,994.20, 31,496.76 and 9,304.64 is: 13,959.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,994.20 : 31,496.76 = 9,304.64 : x
  2. Step 2: Convert to fraction form
    20,994.20/31,496.76 = 9,304.64/x
  3. Step 3: Cross multiply
    20,994.20x = 31,496.76 × 9,304.64
  4. Step 4: Simplify right side
    20,994.20x = 293,066,012.97
  5. Step 5: Solve for x
    x = 293,066,012.97/20,994.20
  6. Step 6: Final answer
    x = 13,959.38

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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.