Home / 20,877.26-28,812.42-11,447.64

Finding the Fourth Proportional to 20,877.26, 28,812.42 and 11,447.64

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Solution

The fourth proportional to 20,877.26, 28,812.42 and 11,447.64 is: 15,798.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,877.26 : 28,812.42 = 11,447.64 : x
  2. Step 2: Convert to fraction form
    20,877.26/28,812.42 = 11,447.64/x
  3. Step 3: Cross multiply
    20,877.26x = 28,812.42 × 11,447.64
  4. Step 4: Simplify right side
    20,877.26x = 329,834,211.69
  5. Step 5: Solve for x
    x = 329,834,211.69/20,877.26
  6. Step 6: Final answer
    x = 15,798.73

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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.