Home / 20,433.44-28,211.19-13,637.15

Finding the Fourth Proportional to 20,433.44, 28,211.19 and 13,637.15

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Solution

The fourth proportional to 20,433.44, 28,211.19 and 13,637.15 is: 18,827.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,433.44 : 28,211.19 = 13,637.15 : x
  2. Step 2: Convert to fraction form
    20,433.44/28,211.19 = 13,637.15/x
  3. Step 3: Cross multiply
    20,433.44x = 28,211.19 × 13,637.15
  4. Step 4: Simplify right side
    20,433.44x = 384,720,229.71
  5. Step 5: Solve for x
    x = 384,720,229.71/20,433.44
  6. Step 6: Final answer
    x = 18,827.97

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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.