Home / 20,864.05-28,791.71-11,432.41

Finding the Fourth Proportional to 20,864.05, 28,791.71 and 11,432.41

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Solution

The fourth proportional to 20,864.05, 28,791.71 and 11,432.41 is: 15,776.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,864.05 : 28,791.71 = 11,432.41 : x
  2. Step 2: Convert to fraction form
    20,864.05/28,791.71 = 11,432.41/x
  3. Step 3: Cross multiply
    20,864.05x = 28,791.71 × 11,432.41
  4. Step 4: Simplify right side
    20,864.05x = 329,158,633.32
  5. Step 5: Solve for x
    x = 329,158,633.32/20,864.05
  6. Step 6: Final answer
    x = 15,776.35

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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.