Home / 21,836.27-30,133.18-12,403.79

Finding the Fourth Proportional to 21,836.27, 30,133.18 and 12,403.79

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Solution

The fourth proportional to 21,836.27, 30,133.18 and 12,403.79 is: 17,116.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,836.27 : 30,133.18 = 12,403.79 : x
  2. Step 2: Convert to fraction form
    21,836.27/30,133.18 = 12,403.79/x
  3. Step 3: Cross multiply
    21,836.27x = 30,133.18 × 12,403.79
  4. Step 4: Simplify right side
    21,836.27x = 373,765,636.75
  5. Step 5: Solve for x
    x = 373,765,636.75/21,836.27
  6. Step 6: Final answer
    x = 17,116.73

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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.