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Finding the Fourth Proportional to 15,836.84, 21,836.95 and 11,845.16

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Solution

The fourth proportional to 15,836.84, 21,836.95 and 11,845.16 is: 16,332.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,836.84 : 21,836.95 = 11,845.16 : x
  2. Step 2: Convert to fraction form
    15,836.84/21,836.95 = 11,845.16/x
  3. Step 3: Cross multiply
    15,836.84x = 21,836.95 × 11,845.16
  4. Step 4: Simplify right side
    15,836.84x = 258,662,027.86
  5. Step 5: Solve for x
    x = 258,662,027.86/15,836.84
  6. Step 6: Final answer
    x = 16,332.94

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