Home / 34,400.81-47,481.57-20,979.47

Finding the Fourth Proportional to 34,400.81, 47,481.57 and 20,979.47

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Solution

The fourth proportional to 34,400.81, 47,481.57 and 20,979.47 is: 28,956.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,400.81 : 47,481.57 = 20,979.47 : x
  2. Step 2: Convert to fraction form
    34,400.81/47,481.57 = 20,979.47/x
  3. Step 3: Cross multiply
    34,400.81x = 47,481.57 × 20,979.47
  4. Step 4: Simplify right side
    34,400.81x = 996,138,173.37
  5. Step 5: Solve for x
    x = 996,138,173.37/34,400.81
  6. Step 6: Final answer
    x = 28,956.82

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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.