Home / 21,847.42-30,149.40-11,911.42

Finding the Fourth Proportional to 21,847.42, 30,149.40 and 11,911.42

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Solution

The fourth proportional to 21,847.42, 30,149.40 and 11,911.42 is: 16,437.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,847.42 : 30,149.40 = 11,911.42 : x
  2. Step 2: Convert to fraction form
    21,847.42/30,149.40 = 11,911.42/x
  3. Step 3: Cross multiply
    21,847.42x = 30,149.40 × 11,911.42
  4. Step 4: Simplify right side
    21,847.42x = 359,122,166.15
  5. Step 5: Solve for x
    x = 359,122,166.15/21,847.42
  6. Step 6: Final answer
    x = 16,437.74

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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.