Home / 20,506.12-28,310.74-13,444.86

Finding the Fourth Proportional to 20,506.12, 28,310.74 and 13,444.86

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Solution

The fourth proportional to 20,506.12, 28,310.74 and 13,444.86 is: 18,561.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,506.12 : 28,310.74 = 13,444.86 : x
  2. Step 2: Convert to fraction form
    20,506.12/28,310.74 = 13,444.86/x
  3. Step 3: Cross multiply
    20,506.12x = 28,310.74 × 13,444.86
  4. Step 4: Simplify right side
    20,506.12x = 380,633,935.80
  5. Step 5: Solve for x
    x = 380,633,935.80/20,506.12
  6. Step 6: Final answer
    x = 18,561.97

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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.