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Finding the Fourth Proportional to 15,897.41, 21,936.52 and 8,822.87

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Solution

The fourth proportional to 15,897.41, 21,936.52 and 8,822.87 is: 12,174.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,897.41 : 21,936.52 = 8,822.87 : x
  2. Step 2: Convert to fraction form
    15,897.41/21,936.52 = 8,822.87/x
  3. Step 3: Cross multiply
    15,897.41x = 21,936.52 × 8,822.87
  4. Step 4: Simplify right side
    15,897.41x = 193,543,064.21
  5. Step 5: Solve for x
    x = 193,543,064.21/15,897.41
  6. Step 6: Final answer
    x = 12,174.50

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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.