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Finding the Fourth Proportional to 19,385.53, 29,079 and 6,900.95

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Solution

The fourth proportional to 19,385.53, 29,079 and 6,900.95 is: 10,351.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,385.53 : 29,079 = 6,900.95 : x
  2. Step 2: Convert to fraction form
    19,385.53/29,079 = 6,900.95/x
  3. Step 3: Cross multiply
    19,385.53x = 29,079 × 6,900.95
  4. Step 4: Simplify right side
    19,385.53x = 200,672,634.18
  5. Step 5: Solve for x
    x = 200,672,634.18/19,385.53
  6. Step 6: Final answer
    x = 10,351.67

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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.