Home / 13,151.48-18,148.19-7,181.91

Finding the Fourth Proportional to 13,151.48, 18,148.19 and 7,181.91

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Solution

The fourth proportional to 13,151.48, 18,148.19 and 7,181.91 is: 9,910.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,151.48 : 18,148.19 = 7,181.91 : x
  2. Step 2: Convert to fraction form
    13,151.48/18,148.19 = 7,181.91/x
  3. Step 3: Cross multiply
    13,151.48x = 18,148.19 × 7,181.91
  4. Step 4: Simplify right side
    13,151.48x = 130,338,631.33
  5. Step 5: Solve for x
    x = 130,338,631.33/13,151.48
  6. Step 6: Final answer
    x = 9,910.57

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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.