Home / 20,308.44-28,017.16-15,824.42

Finding the Fourth Proportional to 20,308.44, 28,017.16 and 15,824.42

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Solution

The fourth proportional to 20,308.44, 28,017.16 and 15,824.42 is: 21,831.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,308.44 : 28,017.16 = 15,824.42 : x
  2. Step 2: Convert to fraction form
    20,308.44/28,017.16 = 15,824.42/x
  3. Step 3: Cross multiply
    20,308.44x = 28,017.16 × 15,824.42
  4. Step 4: Simplify right side
    20,308.44x = 443,355,307.05
  5. Step 5: Solve for x
    x = 443,355,307.05/20,308.44
  6. Step 6: Final answer
    x = 21,831.09

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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.