Home / 12,087.05-16,681.66-6,781.84

Finding the Fourth Proportional to 12,087.05, 16,681.66 and 6,781.84

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Solution

The fourth proportional to 12,087.05, 16,681.66 and 6,781.84 is: 9,359.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,087.05 : 16,681.66 = 6,781.84 : x
  2. Step 2: Convert to fraction form
    12,087.05/16,681.66 = 6,781.84/x
  3. Step 3: Cross multiply
    12,087.05x = 16,681.66 × 6,781.84
  4. Step 4: Simplify right side
    12,087.05x = 113,132,290.40
  5. Step 5: Solve for x
    x = 113,132,290.40/12,087.05
  6. Step 6: Final answer
    x = 9,359.79

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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.