Home / 21,935.12-30,270.35-11,863.55

Finding the Fourth Proportional to 21,935.12, 30,270.35 and 11,863.55

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Solution

The fourth proportional to 21,935.12, 30,270.35 and 11,863.55 is: 16,371.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,935.12 : 30,270.35 = 11,863.55 : x
  2. Step 2: Convert to fraction form
    21,935.12/30,270.35 = 11,863.55/x
  3. Step 3: Cross multiply
    21,935.12x = 30,270.35 × 11,863.55
  4. Step 4: Simplify right side
    21,935.12x = 359,113,600.07
  5. Step 5: Solve for x
    x = 359,113,600.07/21,935.12
  6. Step 6: Final answer
    x = 16,371.63

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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.