Home / 19,139.64-28,692.16-6,824.76

Finding the Fourth Proportional to 19,139.64, 28,692.16 and 6,824.76

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Solution

The fourth proportional to 19,139.64, 28,692.16 and 6,824.76 is: 10,230.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,139.64 : 28,692.16 = 6,824.76 : x
  2. Step 2: Convert to fraction form
    19,139.64/28,692.16 = 6,824.76/x
  3. Step 3: Cross multiply
    19,139.64x = 28,692.16 × 6,824.76
  4. Step 4: Simplify right side
    19,139.64x = 195,817,105.88
  5. Step 5: Solve for x
    x = 195,817,105.88/19,139.64
  6. Step 6: Final answer
    x = 10,230.97

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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.