Home / 21,707.68-29,958.21-12,148.53

Finding the Fourth Proportional to 21,707.68, 29,958.21 and 12,148.53

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Solution

The fourth proportional to 21,707.68, 29,958.21 and 12,148.53 is: 16,765.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,707.68 : 29,958.21 = 12,148.53 : x
  2. Step 2: Convert to fraction form
    21,707.68/29,958.21 = 12,148.53/x
  3. Step 3: Cross multiply
    21,707.68x = 29,958.21 × 12,148.53
  4. Step 4: Simplify right side
    21,707.68x = 363,948,100.59
  5. Step 5: Solve for x
    x = 363,948,100.59/21,707.68
  6. Step 6: Final answer
    x = 16,765.87

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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.