Home / 13,148.90-18,146.22-7,181.12

Finding the Fourth Proportional to 13,148.90, 18,146.22 and 7,181.12

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Solution

The fourth proportional to 13,148.90, 18,146.22 and 7,181.12 is: 9,910.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,148.90 : 18,146.22 = 7,181.12 : x
  2. Step 2: Convert to fraction form
    13,148.90/18,146.22 = 7,181.12/x
  3. Step 3: Cross multiply
    13,148.90x = 18,146.22 × 7,181.12
  4. Step 4: Simplify right side
    13,148.90x = 130,310,201.80
  5. Step 5: Solve for x
    x = 130,310,201.80/13,148.90
  6. Step 6: Final answer
    x = 9,910.35

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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.