Home / 18,431.83-25,415.82-12,453.11

Finding the Fourth Proportional to 18,431.83, 25,415.82 and 12,453.11

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Solution

The fourth proportional to 18,431.83, 25,415.82 and 12,453.11 is: 17,171.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,431.83 : 25,415.82 = 12,453.11 : x
  2. Step 2: Convert to fraction form
    18,431.83/25,415.82 = 12,453.11/x
  3. Step 3: Cross multiply
    18,431.83x = 25,415.82 × 12,453.11
  4. Step 4: Simplify right side
    18,431.83x = 316,506,002.20
  5. Step 5: Solve for x
    x = 316,506,002.20/18,431.83
  6. Step 6: Final answer
    x = 17,171.71

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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.