Home / 21,935.14-30,270.40-11,863.59

Finding the Fourth Proportional to 21,935.14, 30,270.40 and 11,863.59

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Solution

The fourth proportional to 21,935.14, 30,270.40 and 11,863.59 is: 16,371.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,935.14 : 30,270.40 = 11,863.59 : x
  2. Step 2: Convert to fraction form
    21,935.14/30,270.40 = 11,863.59/x
  3. Step 3: Cross multiply
    21,935.14x = 30,270.40 × 11,863.59
  4. Step 4: Simplify right side
    21,935.14x = 359,115,614.74
  5. Step 5: Solve for x
    x = 359,115,614.74/21,935.14
  6. Step 6: Final answer
    x = 16,371.70

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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.