Home / 19,722.06-29,534.76-12,679.92

Finding the Fourth Proportional to 19,722.06, 29,534.76 and 12,679.92

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Solution

The fourth proportional to 19,722.06, 29,534.76 and 12,679.92 is: 18,988.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,722.06 : 29,534.76 = 12,679.92 : x
  2. Step 2: Convert to fraction form
    19,722.06/29,534.76 = 12,679.92/x
  3. Step 3: Cross multiply
    19,722.06x = 29,534.76 × 12,679.92
  4. Step 4: Simplify right side
    19,722.06x = 374,498,394.02
  5. Step 5: Solve for x
    x = 374,498,394.02/19,722.06
  6. Step 6: Final answer
    x = 18,988.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.