Home / 20,863.36-28,791.48-11,432.08

Finding the Fourth Proportional to 20,863.36, 28,791.48 and 11,432.08

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Solution

The fourth proportional to 20,863.36, 28,791.48 and 11,432.08 is: 15,776.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,863.36 : 28,791.48 = 11,432.08 : x
  2. Step 2: Convert to fraction form
    20,863.36/28,791.48 = 11,432.08/x
  3. Step 3: Cross multiply
    20,863.36x = 28,791.48 × 11,432.08
  4. Step 4: Simplify right side
    20,863.36x = 329,146,502.68
  5. Step 5: Solve for x
    x = 329,146,502.68/20,863.36
  6. Step 6: Final answer
    x = 15,776.29

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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.