Home / 18,521.22-25,559.64-10,137.72

Finding the Fourth Proportional to 18,521.22, 25,559.64 and 10,137.72

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Solution

The fourth proportional to 18,521.22, 25,559.64 and 10,137.72 is: 13,990.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,521.22 : 25,559.64 = 10,137.72 : x
  2. Step 2: Convert to fraction form
    18,521.22/25,559.64 = 10,137.72/x
  3. Step 3: Cross multiply
    18,521.22x = 25,559.64 × 10,137.72
  4. Step 4: Simplify right side
    18,521.22x = 259,116,473.62
  5. Step 5: Solve for x
    x = 259,116,473.62/18,521.22
  6. Step 6: Final answer
    x = 13,990.25

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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.