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Finding the Fourth Proportional to 11,700.70, 16,147.20 and 6,395.74

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Solution

The fourth proportional to 11,700.70, 16,147.20 and 6,395.74 is: 8,826.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,700.70 : 16,147.20 = 6,395.74 : x
  2. Step 2: Convert to fraction form
    11,700.70/16,147.20 = 6,395.74/x
  3. Step 3: Cross multiply
    11,700.70x = 16,147.20 × 6,395.74
  4. Step 4: Simplify right side
    11,700.70x = 103,273,292.93
  5. Step 5: Solve for x
    x = 103,273,292.93/11,700.70
  6. Step 6: Final answer
    x = 8,826.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.