Home / 13,660.35-18,851.10-7,692.61

Finding the Fourth Proportional to 13,660.35, 18,851.10 and 7,692.61

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Solution

The fourth proportional to 13,660.35, 18,851.10 and 7,692.61 is: 10,615.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,660.35 : 18,851.10 = 7,692.61 : x
  2. Step 2: Convert to fraction form
    13,660.35/18,851.10 = 7,692.61/x
  3. Step 3: Cross multiply
    13,660.35x = 18,851.10 × 7,692.61
  4. Step 4: Simplify right side
    13,660.35x = 145,014,066.12
  5. Step 5: Solve for x
    x = 145,014,066.12/13,660.35
  6. Step 6: Final answer
    x = 10,615.69

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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.