Home / 12,719.22-17,561.27-9,729.84

Finding the Fourth Proportional to 12,719.22, 17,561.27 and 9,729.84

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Solution

The fourth proportional to 12,719.22, 17,561.27 and 9,729.84 is: 13,433.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,719.22 : 17,561.27 = 9,729.84 : x
  2. Step 2: Convert to fraction form
    12,719.22/17,561.27 = 9,729.84/x
  3. Step 3: Cross multiply
    12,719.22x = 17,561.27 × 9,729.84
  4. Step 4: Simplify right side
    12,719.22x = 170,868,347.30
  5. Step 5: Solve for x
    x = 170,868,347.30/12,719.22
  6. Step 6: Final answer
    x = 13,433.87

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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.