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Finding the Fourth Proportional to 11,695.88, 16,140.02 and 6,390.52

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Solution

The fourth proportional to 11,695.88, 16,140.02 and 6,390.52 is: 8,818.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,695.88 : 16,140.02 = 6,390.52 : x
  2. Step 2: Convert to fraction form
    11,695.88/16,140.02 = 6,390.52/x
  3. Step 3: Cross multiply
    11,695.88x = 16,140.02 × 6,390.52
  4. Step 4: Simplify right side
    11,695.88x = 103,143,120.61
  5. Step 5: Solve for x
    x = 103,143,120.61/11,695.88
  6. Step 6: Final answer
    x = 8,818.76

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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.