Home / 18,197.19-25,099.88-11,111.31

Finding the Fourth Proportional to 18,197.19, 25,099.88 and 11,111.31

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Solution

The fourth proportional to 18,197.19, 25,099.88 and 11,111.31 is: 15,326.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,197.19 : 25,099.88 = 11,111.31 : x
  2. Step 2: Convert to fraction form
    18,197.19/25,099.88 = 11,111.31/x
  3. Step 3: Cross multiply
    18,197.19x = 25,099.88 × 11,111.31
  4. Step 4: Simplify right side
    18,197.19x = 278,892,492.09
  5. Step 5: Solve for x
    x = 278,892,492.09/18,197.19
  6. Step 6: Final answer
    x = 15,326.13

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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.