Home / 18,161.72-25,048.12-15,335.64

Finding the Fourth Proportional to 18,161.72, 25,048.12 and 15,335.64

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Solution

The fourth proportional to 18,161.72, 25,048.12 and 15,335.64 is: 21,150.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,161.72 : 25,048.12 = 15,335.64 : x
  2. Step 2: Convert to fraction form
    18,161.72/25,048.12 = 15,335.64/x
  3. Step 3: Cross multiply
    18,161.72x = 25,048.12 × 15,335.64
  4. Step 4: Simplify right side
    18,161.72x = 384,128,951.00
  5. Step 5: Solve for x
    x = 384,128,951.00/18,161.72
  6. Step 6: Final answer
    x = 21,150.47

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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.