Home / 19,999.28-29,998.52-5,207.88

Finding the Fourth Proportional to 19,999.28, 29,998.52 and 5,207.88

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Solution

The fourth proportional to 19,999.28, 29,998.52 and 5,207.88 is: 7,811.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,999.28 : 29,998.52 = 5,207.88 : x
  2. Step 2: Convert to fraction form
    19,999.28/29,998.52 = 5,207.88/x
  3. Step 3: Cross multiply
    19,999.28x = 29,998.52 × 5,207.88
  4. Step 4: Simplify right side
    19,999.28x = 156,228,692.34
  5. Step 5: Solve for x
    x = 156,228,692.34/19,999.28
  6. Step 6: Final answer
    x = 7,811.72

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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.