Home / 19,742.20-27,230.88-12,677.20

Finding the Fourth Proportional to 19,742.20, 27,230.88 and 12,677.20

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Solution

The fourth proportional to 19,742.20, 27,230.88 and 12,677.20 is: 17,485.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,742.20 : 27,230.88 = 12,677.20 : x
  2. Step 2: Convert to fraction form
    19,742.20/27,230.88 = 12,677.20/x
  3. Step 3: Cross multiply
    19,742.20x = 27,230.88 × 12,677.20
  4. Step 4: Simplify right side
    19,742.20x = 345,211,311.94
  5. Step 5: Solve for x
    x = 345,211,311.94/19,742.20
  6. Step 6: Final answer
    x = 17,485.96

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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.