Home / 20,293.49-30,440.25-13,279.41

Finding the Fourth Proportional to 20,293.49, 30,440.25 and 13,279.41

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Solution

The fourth proportional to 20,293.49, 30,440.25 and 13,279.41 is: 19,919.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,293.49 : 30,440.25 = 13,279.41 : x
  2. Step 2: Convert to fraction form
    20,293.49/30,440.25 = 13,279.41/x
  3. Step 3: Cross multiply
    20,293.49x = 30,440.25 × 13,279.41
  4. Step 4: Simplify right side
    20,293.49x = 404,228,341.65
  5. Step 5: Solve for x
    x = 404,228,341.65/20,293.49
  6. Step 6: Final answer
    x = 19,919.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.