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Finding the Fourth Proportional to 15,897.35, 21,939.11 and 9,183.87

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Solution

The fourth proportional to 15,897.35, 21,939.11 and 9,183.87 is: 12,674.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,897.35 : 21,939.11 = 9,183.87 : x
  2. Step 2: Convert to fraction form
    15,897.35/21,939.11 = 9,183.87/x
  3. Step 3: Cross multiply
    15,897.35x = 21,939.11 × 9,183.87
  4. Step 4: Simplify right side
    15,897.35x = 201,485,888.24
  5. Step 5: Solve for x
    x = 201,485,888.24/15,897.35
  6. Step 6: Final answer
    x = 12,674.18

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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.