Home / 12,146.72-16,770.21-9,913.92

Finding the Fourth Proportional to 12,146.72, 16,770.21 and 9,913.92

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Solution

The fourth proportional to 12,146.72, 16,770.21 and 9,913.92 is: 13,687.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,146.72 : 16,770.21 = 9,913.92 : x
  2. Step 2: Convert to fraction form
    12,146.72/16,770.21 = 9,913.92/x
  3. Step 3: Cross multiply
    12,146.72x = 16,770.21 × 9,913.92
  4. Step 4: Simplify right side
    12,146.72x = 166,258,520.32
  5. Step 5: Solve for x
    x = 166,258,520.32/12,146.72
  6. Step 6: Final answer
    x = 13,687.52

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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.