Home / 27,912.15-38,518.34-15,336.63

Finding the Fourth Proportional to 27,912.15, 38,518.34 and 15,336.63

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Solution

The fourth proportional to 27,912.15, 38,518.34 and 15,336.63 is: 21,164.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,912.15 : 38,518.34 = 15,336.63 : x
  2. Step 2: Convert to fraction form
    27,912.15/38,518.34 = 15,336.63/x
  3. Step 3: Cross multiply
    27,912.15x = 38,518.34 × 15,336.63
  4. Step 4: Simplify right side
    27,912.15x = 590,741,452.11
  5. Step 5: Solve for x
    x = 590,741,452.11/27,912.15
  6. Step 6: Final answer
    x = 21,164.31

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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.