Home / 27,806.10-38,379.33-15,876.36

Finding the Fourth Proportional to 27,806.10, 38,379.33 and 15,876.36

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Solution

The fourth proportional to 27,806.10, 38,379.33 and 15,876.36 is: 21,913.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,806.10 : 38,379.33 = 15,876.36 : x
  2. Step 2: Convert to fraction form
    27,806.10/38,379.33 = 15,876.36/x
  3. Step 3: Cross multiply
    27,806.10x = 38,379.33 × 15,876.36
  4. Step 4: Simplify right side
    27,806.10x = 609,324,059.64
  5. Step 5: Solve for x
    x = 609,324,059.64/27,806.10
  6. Step 6: Final answer
    x = 21,913.32

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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.