Home / 13,137.12-18,126.76-7,832.44

Finding the Fourth Proportional to 13,137.12, 18,126.76 and 7,832.44

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Solution

The fourth proportional to 13,137.12, 18,126.76 and 7,832.44 is: 10,807.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,137.12 : 18,126.76 = 7,832.44 : x
  2. Step 2: Convert to fraction form
    13,137.12/18,126.76 = 7,832.44/x
  3. Step 3: Cross multiply
    13,137.12x = 18,126.76 × 7,832.44
  4. Step 4: Simplify right side
    13,137.12x = 141,976,760.09
  5. Step 5: Solve for x
    x = 141,976,760.09/13,137.12
  6. Step 6: Final answer
    x = 10,807.30

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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.