Home / 12,277.20-16,935.30-8,688.12

Finding the Fourth Proportional to 12,277.20, 16,935.30 and 8,688.12

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Solution

The fourth proportional to 12,277.20, 16,935.30 and 8,688.12 is: 11,984.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,277.20 : 16,935.30 = 8,688.12 : x
  2. Step 2: Convert to fraction form
    12,277.20/16,935.30 = 8,688.12/x
  3. Step 3: Cross multiply
    12,277.20x = 16,935.30 × 8,688.12
  4. Step 4: Simplify right side
    12,277.20x = 147,135,918.64
  5. Step 5: Solve for x
    x = 147,135,918.64/12,277.20
  6. Step 6: Final answer
    x = 11,984.48

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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.