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Finding the Fourth Proportional to 20,590.00, 30,885.00 and 13,999.84

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Solution

The fourth proportional to 20,590.00, 30,885.00 and 13,999.84 is: 20,999.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,590.00 : 30,885.00 = 13,999.84 : x
  2. Step 2: Convert to fraction form
    20,590.00/30,885.00 = 13,999.84/x
  3. Step 3: Cross multiply
    20,590.00x = 30,885.00 × 13,999.84
  4. Step 4: Simplify right side
    20,590.00x = 432,384,928.69
  5. Step 5: Solve for x
    x = 432,384,928.69/20,590.00
  6. Step 6: Final answer
    x = 20,999.76

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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.