Home / 20,624.36-30,866.41-12,731.85

Finding the Fourth Proportional to 20,624.36, 30,866.41 and 12,731.85

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Solution

The fourth proportional to 20,624.36, 30,866.41 and 12,731.85 is: 19,054.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,624.36 : 30,866.41 = 12,731.85 : x
  2. Step 2: Convert to fraction form
    20,624.36/30,866.41 = 12,731.85/x
  3. Step 3: Cross multiply
    20,624.36x = 30,866.41 × 12,731.85
  4. Step 4: Simplify right side
    20,624.36x = 392,986,470.33
  5. Step 5: Solve for x
    x = 392,986,470.33/20,624.36
  6. Step 6: Final answer
    x = 19,054.49

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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.