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Finding the Fourth Proportional to 13,359.88, 20,048 and 6,790.76

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Solution

The fourth proportional to 13,359.88, 20,048 and 6,790.76 is: 10,190.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,359.88 : 20,048 = 6,790.76 : x
  2. Step 2: Convert to fraction form
    13,359.88/20,048 = 6,790.76/x
  3. Step 3: Cross multiply
    13,359.88x = 20,048 × 6,790.76
  4. Step 4: Simplify right side
    13,359.88x = 136,141,156.48
  5. Step 5: Solve for x
    x = 136,141,156.48/13,359.88
  6. Step 6: Final answer
    x = 10,190.30

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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.