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Finding the Fourth Proportional to 10,163.15, 13,993.99 and 8,897.12

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Solution

The fourth proportional to 10,163.15, 13,993.99 and 8,897.12 is: 12,250.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,163.15 : 13,993.99 = 8,897.12 : x
  2. Step 2: Convert to fraction form
    10,163.15/13,993.99 = 8,897.12/x
  3. Step 3: Cross multiply
    10,163.15x = 13,993.99 × 8,897.12
  4. Step 4: Simplify right side
    10,163.15x = 124,506,116.10
  5. Step 5: Solve for x
    x = 124,506,116.10/10,163.15
  6. Step 6: Final answer
    x = 12,250.75

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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.