Home / 13,605.03-18,770.13-8,892.05

Finding the Fourth Proportional to 13,605.03, 18,770.13 and 8,892.05

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Solution

The fourth proportional to 13,605.03, 18,770.13 and 8,892.05 is: 12,267.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,605.03 : 18,770.13 = 8,892.05 : x
  2. Step 2: Convert to fraction form
    13,605.03/18,770.13 = 8,892.05/x
  3. Step 3: Cross multiply
    13,605.03x = 18,770.13 × 8,892.05
  4. Step 4: Simplify right side
    13,605.03x = 166,904,840.62
  5. Step 5: Solve for x
    x = 166,904,840.62/13,605.03
  6. Step 6: Final answer
    x = 12,267.88

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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.