Home / 27,806.47-38,375.68-15,871.59

Finding the Fourth Proportional to 27,806.47, 38,375.68 and 15,871.59

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Solution

The fourth proportional to 27,806.47, 38,375.68 and 15,871.59 is: 21,904.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,806.47 : 38,375.68 = 15,871.59 : x
  2. Step 2: Convert to fraction form
    27,806.47/38,375.68 = 15,871.59/x
  3. Step 3: Cross multiply
    27,806.47x = 38,375.68 × 15,871.59
  4. Step 4: Simplify right side
    27,806.47x = 609,083,058.93
  5. Step 5: Solve for x
    x = 609,083,058.93/27,806.47
  6. Step 6: Final answer
    x = 21,904.36

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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.