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Finding the Fourth Proportional to 11,698.47, 16,143.71 and 6,393.20

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Solution

The fourth proportional to 11,698.47, 16,143.71 and 6,393.20 is: 8,822.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,698.47 : 16,143.71 = 6,393.20 : x
  2. Step 2: Convert to fraction form
    11,698.47/16,143.71 = 6,393.20/x
  3. Step 3: Cross multiply
    11,698.47x = 16,143.71 × 6,393.20
  4. Step 4: Simplify right side
    11,698.47x = 103,209,854.09
  5. Step 5: Solve for x
    x = 103,209,854.09/11,698.47
  6. Step 6: Final answer
    x = 8,822.51

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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.