Home / 20,924.68-31,392.46-7,780.84

Finding the Fourth Proportional to 20,924.68, 31,392.46 and 7,780.84

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Solution

The fourth proportional to 20,924.68, 31,392.46 and 7,780.84 is: 11,673.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,924.68 : 31,392.46 = 7,780.84 : x
  2. Step 2: Convert to fraction form
    20,924.68/31,392.46 = 7,780.84/x
  3. Step 3: Cross multiply
    20,924.68x = 31,392.46 × 7,780.84
  4. Step 4: Simplify right side
    20,924.68x = 244,259,708.47
  5. Step 5: Solve for x
    x = 244,259,708.47/20,924.68
  6. Step 6: Final answer
    x = 11,673.28

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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.