Home / 27,806.79-38,373.38-15,231.54

Finding the Fourth Proportional to 27,806.79, 38,373.38 and 15,231.54

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Solution

The fourth proportional to 27,806.79, 38,373.38 and 15,231.54 is: 21,019.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,806.79 : 38,373.38 = 15,231.54 : x
  2. Step 2: Convert to fraction form
    27,806.79/38,373.38 = 15,231.54/x
  3. Step 3: Cross multiply
    27,806.79x = 38,373.38 × 15,231.54
  4. Step 4: Simplify right side
    27,806.79x = 584,485,672.41
  5. Step 5: Solve for x
    x = 584,485,672.41/27,806.79
  6. Step 6: Final answer
    x = 21,019.53

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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.