Home / 21,781.64-30,057.54-12,350.84

Finding the Fourth Proportional to 21,781.64, 30,057.54 and 12,350.84

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Solution

The fourth proportional to 21,781.64, 30,057.54 and 12,350.84 is: 17,043.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,781.64 : 30,057.54 = 12,350.84 : x
  2. Step 2: Convert to fraction form
    21,781.64/30,057.54 = 12,350.84/x
  3. Step 3: Cross multiply
    21,781.64x = 30,057.54 × 12,350.84
  4. Step 4: Simplify right side
    21,781.64x = 371,235,867.33
  5. Step 5: Solve for x
    x = 371,235,867.33/21,781.64
  6. Step 6: Final answer
    x = 17,043.52

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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.