Home / 20,125.69-30,193.88-6,978.04

Finding the Fourth Proportional to 20,125.69, 30,193.88 and 6,978.04

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Solution

The fourth proportional to 20,125.69, 30,193.88 and 6,978.04 is: 10,468.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,125.69 : 30,193.88 = 6,978.04 : x
  2. Step 2: Convert to fraction form
    20,125.69/30,193.88 = 6,978.04/x
  3. Step 3: Cross multiply
    20,125.69x = 30,193.88 × 6,978.04
  4. Step 4: Simplify right side
    20,125.69x = 210,693,992.02
  5. Step 5: Solve for x
    x = 210,693,992.02/20,125.69
  6. Step 6: Final answer
    x = 10,468.91

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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.