Home / 20,819.07-31,230.02-7,672.37

Finding the Fourth Proportional to 20,819.07, 31,230.02 and 7,672.37

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Solution

The fourth proportional to 20,819.07, 31,230.02 and 7,672.37 is: 11,509.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,819.07 : 31,230.02 = 7,672.37 : x
  2. Step 2: Convert to fraction form
    20,819.07/31,230.02 = 7,672.37/x
  3. Step 3: Cross multiply
    20,819.07x = 31,230.02 × 7,672.37
  4. Step 4: Simplify right side
    20,819.07x = 239,608,131.58
  5. Step 5: Solve for x
    x = 239,608,131.58/20,819.07
  6. Step 6: Final answer
    x = 11,509.07

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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.