Home / 20,321.47-30,460.33-13,279.33

Finding the Fourth Proportional to 20,321.47, 30,460.33 and 13,279.33

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Solution

The fourth proportional to 20,321.47, 30,460.33 and 13,279.33 is: 19,904.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,321.47 : 30,460.33 = 13,279.33 : x
  2. Step 2: Convert to fraction form
    20,321.47/30,460.33 = 13,279.33/x
  3. Step 3: Cross multiply
    20,321.47x = 30,460.33 × 13,279.33
  4. Step 4: Simplify right side
    20,321.47x = 404,492,773.98
  5. Step 5: Solve for x
    x = 404,492,773.98/20,321.47
  6. Step 6: Final answer
    x = 19,904.70

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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.