Home / 13,160.26-18,161.12-7,191.91

Finding the Fourth Proportional to 13,160.26, 18,161.12 and 7,191.91

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Solution

The fourth proportional to 13,160.26, 18,161.12 and 7,191.91 is: 9,924.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,160.26 : 18,161.12 = 7,191.91 : x
  2. Step 2: Convert to fraction form
    13,160.26/18,161.12 = 7,191.91/x
  3. Step 3: Cross multiply
    13,160.26x = 18,161.12 × 7,191.91
  4. Step 4: Simplify right side
    13,160.26x = 130,613,181.22
  5. Step 5: Solve for x
    x = 130,613,181.22/13,160.26
  6. Step 6: Final answer
    x = 9,924.82

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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.