Home / 21,708.36-29,958.12-12,147.93

Finding the Fourth Proportional to 21,708.36, 29,958.12 and 12,147.93

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Solution

The fourth proportional to 21,708.36, 29,958.12 and 12,147.93 is: 16,764.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,708.36 : 29,958.12 = 12,147.93 : x
  2. Step 2: Convert to fraction form
    21,708.36/29,958.12 = 12,147.93/x
  3. Step 3: Cross multiply
    21,708.36x = 29,958.12 × 12,147.93
  4. Step 4: Simplify right side
    21,708.36x = 363,929,144.69
  5. Step 5: Solve for x
    x = 363,929,144.69/21,708.36
  6. Step 6: Final answer
    x = 16,764.47

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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.