Home / 20,959.42-28,924.44-11,399.80

Finding the Fourth Proportional to 20,959.42, 28,924.44 and 11,399.80

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Solution

The fourth proportional to 20,959.42, 28,924.44 and 11,399.80 is: 15,731.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,959.42 : 28,924.44 = 11,399.80 : x
  2. Step 2: Convert to fraction form
    20,959.42/28,924.44 = 11,399.80/x
  3. Step 3: Cross multiply
    20,959.42x = 28,924.44 × 11,399.80
  4. Step 4: Simplify right side
    20,959.42x = 329,732,831.11
  5. Step 5: Solve for x
    x = 329,732,831.11/20,959.42
  6. Step 6: Final answer
    x = 15,731.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.