Home / 13,101.11-18,079.59-7,132.82

Finding the Fourth Proportional to 13,101.11, 18,079.59 and 7,132.82

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Solution

The fourth proportional to 13,101.11, 18,079.59 and 7,132.82 is: 9,843.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,101.11 : 18,079.59 = 7,132.82 : x
  2. Step 2: Convert to fraction form
    13,101.11/18,079.59 = 7,132.82/x
  3. Step 3: Cross multiply
    13,101.11x = 18,079.59 × 7,132.82
  4. Step 4: Simplify right side
    13,101.11x = 128,958,461.14
  5. Step 5: Solve for x
    x = 128,958,461.14/13,101.11
  6. Step 6: Final answer
    x = 9,843.32

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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.