Home / 20,834.15-28,746.29-12,331.98

Finding the Fourth Proportional to 20,834.15, 28,746.29 and 12,331.98

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Solution

The fourth proportional to 20,834.15, 28,746.29 and 12,331.98 is: 17,015.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,834.15 : 28,746.29 = 12,331.98 : x
  2. Step 2: Convert to fraction form
    20,834.15/28,746.29 = 12,331.98/x
  3. Step 3: Cross multiply
    20,834.15x = 28,746.29 × 12,331.98
  4. Step 4: Simplify right side
    20,834.15x = 354,498,704.18
  5. Step 5: Solve for x
    x = 354,498,704.18/20,834.15
  6. Step 6: Final answer
    x = 17,015.27

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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.