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Finding the Fourth Proportional to 18,157.88, 25,057.86 and 10,199.90

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Solution

The fourth proportional to 18,157.88, 25,057.86 and 10,199.90 is: 14,075.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,157.88 : 25,057.86 = 10,199.90 : x
  2. Step 2: Convert to fraction form
    18,157.88/25,057.86 = 10,199.90/x
  3. Step 3: Cross multiply
    18,157.88x = 25,057.86 × 10,199.90
  4. Step 4: Simplify right side
    18,157.88x = 255,587,666.21
  5. Step 5: Solve for x
    x = 255,587,666.21/18,157.88
  6. Step 6: Final answer
    x = 14,075.85

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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.