Home / 20,587.13-30,821.86-19,279.30

Finding the Fourth Proportional to 20,587.13, 30,821.86 and 19,279.30

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Solution

The fourth proportional to 20,587.13, 30,821.86 and 19,279.30 is: 28,863.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,587.13 : 30,821.86 = 19,279.30 : x
  2. Step 2: Convert to fraction form
    20,587.13/30,821.86 = 19,279.30/x
  3. Step 3: Cross multiply
    20,587.13x = 30,821.86 × 19,279.30
  4. Step 4: Simplify right side
    20,587.13x = 594,223,885.50
  5. Step 5: Solve for x
    x = 594,223,885.50/20,587.13
  6. Step 6: Final answer
    x = 28,863.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.