Home / 12,742.92-19,017.18-12,577.68

Finding the Fourth Proportional to 12,742.92, 19,017.18 and 12,577.68

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Solution

The fourth proportional to 12,742.92, 19,017.18 and 12,577.68 is: 18,770.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,742.92 : 19,017.18 = 12,577.68 : x
  2. Step 2: Convert to fraction form
    12,742.92/19,017.18 = 12,577.68/x
  3. Step 3: Cross multiply
    12,742.92x = 19,017.18 × 12,577.68
  4. Step 4: Simplify right side
    12,742.92x = 239,192,004.54
  5. Step 5: Solve for x
    x = 239,192,004.54/12,742.92
  6. Step 6: Final answer
    x = 18,770.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.