Home / 13,908.22-19,194.71-7,940.77

Finding the Fourth Proportional to 13,908.22, 19,194.71 and 7,940.77

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Solution

The fourth proportional to 13,908.22, 19,194.71 and 7,940.77 is: 10,959.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,908.22 : 19,194.71 = 7,940.77 : x
  2. Step 2: Convert to fraction form
    13,908.22/19,194.71 = 7,940.77/x
  3. Step 3: Cross multiply
    13,908.22x = 19,194.71 × 7,940.77
  4. Step 4: Simplify right side
    13,908.22x = 152,420,689.64
  5. Step 5: Solve for x
    x = 152,420,689.64/13,908.22
  6. Step 6: Final answer
    x = 10,959.04

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Double scale
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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.