Home / 19,156.91-28,711.01-8,615.66

Finding the Fourth Proportional to 19,156.91, 28,711.01 and 8,615.66

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Solution

The fourth proportional to 19,156.91, 28,711.01 and 8,615.66 is: 12,912.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,156.91 : 28,711.01 = 8,615.66 : x
  2. Step 2: Convert to fraction form
    19,156.91/28,711.01 = 8,615.66/x
  3. Step 3: Cross multiply
    19,156.91x = 28,711.01 × 8,615.66
  4. Step 4: Simplify right side
    19,156.91x = 247,364,113.78
  5. Step 5: Solve for x
    x = 247,364,113.78/19,156.91
  6. Step 6: Final answer
    x = 12,912.53

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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.