Home / 12,277.28-16,942.56-6,688.28

Finding the Fourth Proportional to 12,277.28, 16,942.56 and 6,688.28

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Solution

The fourth proportional to 12,277.28, 16,942.56 and 6,688.28 is: 9,229.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,277.28 : 16,942.56 = 6,688.28 : x
  2. Step 2: Convert to fraction form
    12,277.28/16,942.56 = 6,688.28/x
  3. Step 3: Cross multiply
    12,277.28x = 16,942.56 × 6,688.28
  4. Step 4: Simplify right side
    12,277.28x = 113,316,585.20
  5. Step 5: Solve for x
    x = 113,316,585.20/12,277.28
  6. Step 6: Final answer
    x = 9,229.78

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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.