Home / 27,806.13-38,375.16-15,871.23

Finding the Fourth Proportional to 27,806.13, 38,375.16 and 15,871.23

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Solution

The fourth proportional to 27,806.13, 38,375.16 and 15,871.23 is: 21,903.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,806.13 : 38,375.16 = 15,871.23 : x
  2. Step 2: Convert to fraction form
    27,806.13/38,375.16 = 15,871.23/x
  3. Step 3: Cross multiply
    27,806.13x = 38,375.16 × 15,871.23
  4. Step 4: Simplify right side
    27,806.13x = 609,060,990.65
  5. Step 5: Solve for x
    x = 609,060,990.65/27,806.13
  6. Step 6: Final answer
    x = 21,903.84

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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.