Home / 20,301.39-28,005.66-13,587.30

Finding the Fourth Proportional to 20,301.39, 28,005.66 and 13,587.30

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Solution

The fourth proportional to 20,301.39, 28,005.66 and 13,587.30 is: 18,743.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,301.39 : 28,005.66 = 13,587.30 : x
  2. Step 2: Convert to fraction form
    20,301.39/28,005.66 = 13,587.30/x
  3. Step 3: Cross multiply
    20,301.39x = 28,005.66 × 13,587.30
  4. Step 4: Simplify right side
    20,301.39x = 380,521,304.12
  5. Step 5: Solve for x
    x = 380,521,304.12/20,301.39
  6. Step 6: Final answer
    x = 18,743.61

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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.