Home / 20,263.81-27,963.96-11,310.78

Finding the Fourth Proportional to 20,263.81, 27,963.96 and 11,310.78

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Solution

The fourth proportional to 20,263.81, 27,963.96 and 11,310.78 is: 15,608.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,263.81 : 27,963.96 = 11,310.78 : x
  2. Step 2: Convert to fraction form
    20,263.81/27,963.96 = 11,310.78/x
  3. Step 3: Cross multiply
    20,263.81x = 27,963.96 × 11,310.78
  4. Step 4: Simplify right side
    20,263.81x = 316,294,199.49
  5. Step 5: Solve for x
    x = 316,294,199.49/20,263.81
  6. Step 6: Final answer
    x = 15,608.82

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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.