Home / 27,145.31-37,409.78-21,167.51

Finding the Fourth Proportional to 27,145.31, 37,409.78 and 21,167.51

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Solution

The fourth proportional to 27,145.31, 37,409.78 and 21,167.51 is: 29,171.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,145.31 : 37,409.78 = 21,167.51 : x
  2. Step 2: Convert to fraction form
    27,145.31/37,409.78 = 21,167.51/x
  3. Step 3: Cross multiply
    27,145.31x = 37,409.78 × 21,167.51
  4. Step 4: Simplify right side
    27,145.31x = 791,871,758.12
  5. Step 5: Solve for x
    x = 791,871,758.12/27,145.31
  6. Step 6: Final answer
    x = 29,171.59

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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.