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Finding the Fourth Proportional to 11,699.76, 16,139.16 and 6,983.28

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Solution

The fourth proportional to 11,699.76, 16,139.16 and 6,983.28 is: 9,633.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,699.76 : 16,139.16 = 6,983.28 : x
  2. Step 2: Convert to fraction form
    11,699.76/16,139.16 = 6,983.28/x
  3. Step 3: Cross multiply
    11,699.76x = 16,139.16 × 6,983.28
  4. Step 4: Simplify right side
    11,699.76x = 112,704,273.24
  5. Step 5: Solve for x
    x = 112,704,273.24/11,699.76
  6. Step 6: Final answer
    x = 9,633.04

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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.