Home / 20,904.08-28,830.74-18,380.93

Finding the Fourth Proportional to 20,904.08, 28,830.74 and 18,380.93

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Solution

The fourth proportional to 20,904.08, 28,830.74 and 18,380.93 is: 25,350.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,904.08 : 28,830.74 = 18,380.93 : x
  2. Step 2: Convert to fraction form
    20,904.08/28,830.74 = 18,380.93/x
  3. Step 3: Cross multiply
    20,904.08x = 28,830.74 × 18,380.93
  4. Step 4: Simplify right side
    20,904.08x = 529,935,577.73
  5. Step 5: Solve for x
    x = 529,935,577.73/20,904.08
  6. Step 6: Final answer
    x = 25,350.83

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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.