Home / 18,138.69-25,031.67-10,967.58

Finding the Fourth Proportional to 18,138.69, 25,031.67 and 10,967.58

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Solution

The fourth proportional to 18,138.69, 25,031.67 and 10,967.58 is: 15,135.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,138.69 : 25,031.67 = 10,967.58 : x
  2. Step 2: Convert to fraction form
    18,138.69/25,031.67 = 10,967.58/x
  3. Step 3: Cross multiply
    18,138.69x = 25,031.67 × 10,967.58
  4. Step 4: Simplify right side
    18,138.69x = 274,536,843.26
  5. Step 5: Solve for x
    x = 274,536,843.26/18,138.69
  6. Step 6: Final answer
    x = 15,135.43

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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.