Home / 20,579.14-28,398.62-12,081.12

Finding the Fourth Proportional to 20,579.14, 28,398.62 and 12,081.12

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Solution

The fourth proportional to 20,579.14, 28,398.62 and 12,081.12 is: 16,671.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,579.14 : 28,398.62 = 12,081.12 : x
  2. Step 2: Convert to fraction form
    20,579.14/28,398.62 = 12,081.12/x
  3. Step 3: Cross multiply
    20,579.14x = 28,398.62 × 12,081.12
  4. Step 4: Simplify right side
    20,579.14x = 343,087,166.26
  5. Step 5: Solve for x
    x = 343,087,166.26/20,579.14
  6. Step 6: Final answer
    x = 16,671.60

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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.