Home / 21,568.77-29,760.33-13,606.38

Finding the Fourth Proportional to 21,568.77, 29,760.33 and 13,606.38

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Solution

The fourth proportional to 21,568.77, 29,760.33 and 13,606.38 is: 18,773.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,568.77 : 29,760.33 = 13,606.38 : x
  2. Step 2: Convert to fraction form
    21,568.77/29,760.33 = 13,606.38/x
  3. Step 3: Cross multiply
    21,568.77x = 29,760.33 × 13,606.38
  4. Step 4: Simplify right side
    21,568.77x = 404,930,455.36
  5. Step 5: Solve for x
    x = 404,930,455.36/21,568.77
  6. Step 6: Final answer
    x = 18,773.92

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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.