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Finding the Fourth Proportional to 15,651.13, 21,599.18 and 8,936.82

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Solution

The fourth proportional to 15,651.13, 21,599.18 and 8,936.82 is: 12,333.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,651.13 : 21,599.18 = 8,936.82 : x
  2. Step 2: Convert to fraction form
    15,651.13/21,599.18 = 8,936.82/x
  3. Step 3: Cross multiply
    15,651.13x = 21,599.18 × 8,936.82
  4. Step 4: Simplify right side
    15,651.13x = 193,027,983.81
  5. Step 5: Solve for x
    x = 193,027,983.81/15,651.13
  6. Step 6: Final answer
    x = 12,333.17

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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.