Home / 12,431.79-17,156.24-6,766.91

Finding the Fourth Proportional to 12,431.79, 17,156.24 and 6,766.91

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Solution

The fourth proportional to 12,431.79, 17,156.24 and 6,766.91 is: 9,338.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,431.79 : 17,156.24 = 6,766.91 : x
  2. Step 2: Convert to fraction form
    12,431.79/17,156.24 = 6,766.91/x
  3. Step 3: Cross multiply
    12,431.79x = 17,156.24 × 6,766.91
  4. Step 4: Simplify right side
    12,431.79x = 116,094,676.74
  5. Step 5: Solve for x
    x = 116,094,676.74/12,431.79
  6. Step 6: Final answer
    x = 9,338.53

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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.