Home / 20,345.25-30,518.06-7,199.85

Finding the Fourth Proportional to 20,345.25, 30,518.06 and 7,199.85

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Solution

The fourth proportional to 20,345.25, 30,518.06 and 7,199.85 is: 10,799.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,345.25 : 30,518.06 = 7,199.85 : x
  2. Step 2: Convert to fraction form
    20,345.25/30,518.06 = 7,199.85/x
  3. Step 3: Cross multiply
    20,345.25x = 30,518.06 × 7,199.85
  4. Step 4: Simplify right side
    20,345.25x = 219,725,418.29
  5. Step 5: Solve for x
    x = 219,725,418.29/20,345.25
  6. Step 6: Final answer
    x = 10,799.84

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1.5x scale

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.