Home / 20,047.92-30,071.61-11,780.39

Finding the Fourth Proportional to 20,047.92, 30,071.61 and 11,780.39

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Solution

The fourth proportional to 20,047.92, 30,071.61 and 11,780.39 is: 17,670.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,047.92 : 30,071.61 = 11,780.39 : x
  2. Step 2: Convert to fraction form
    20,047.92/30,071.61 = 11,780.39/x
  3. Step 3: Cross multiply
    20,047.92x = 30,071.61 × 11,780.39
  4. Step 4: Simplify right side
    20,047.92x = 354,255,143.37
  5. Step 5: Solve for x
    x = 354,255,143.37/20,047.92
  6. Step 6: Final answer
    x = 17,670.42

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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.