Home / 18,211.58-25,131.59-10,145.20

Finding the Fourth Proportional to 18,211.58, 25,131.59 and 10,145.20

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Solution

The fourth proportional to 18,211.58, 25,131.59 and 10,145.20 is: 14,000.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,211.58 : 25,131.59 = 10,145.20 : x
  2. Step 2: Convert to fraction form
    18,211.58/25,131.59 = 10,145.20/x
  3. Step 3: Cross multiply
    18,211.58x = 25,131.59 × 10,145.20
  4. Step 4: Simplify right side
    18,211.58x = 254,965,006.87
  5. Step 5: Solve for x
    x = 254,965,006.87/18,211.58
  6. Step 6: Final answer
    x = 14,000.16

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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.