Home / 11,948.22-16,481.70-9,920.16

Finding the Fourth Proportional to 11,948.22, 16,481.70 and 9,920.16

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Solution

The fourth proportional to 11,948.22, 16,481.70 and 9,920.16 is: 13,684.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,948.22 : 16,481.70 = 9,920.16 : x
  2. Step 2: Convert to fraction form
    11,948.22/16,481.70 = 9,920.16/x
  3. Step 3: Cross multiply
    11,948.22x = 16,481.70 × 9,920.16
  4. Step 4: Simplify right side
    11,948.22x = 163,501,101.07
  5. Step 5: Solve for x
    x = 163,501,101.07/11,948.22
  6. Step 6: Final answer
    x = 13,684.14

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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.