Home / 18,521.08-25,558.11-10,135.96

Finding the Fourth Proportional to 18,521.08, 25,558.11 and 10,135.96

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Solution

The fourth proportional to 18,521.08, 25,558.11 and 10,135.96 is: 13,987.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,521.08 : 25,558.11 = 10,135.96 : x
  2. Step 2: Convert to fraction form
    18,521.08/25,558.11 = 10,135.96/x
  3. Step 3: Cross multiply
    18,521.08x = 25,558.11 × 10,135.96
  4. Step 4: Simplify right side
    18,521.08x = 259,055,980.64
  5. Step 5: Solve for x
    x = 259,055,980.64/18,521.08
  6. Step 6: Final answer
    x = 13,987.09

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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.