Home / 20,804.70-31,216.89-10,423.74

Finding the Fourth Proportional to 20,804.70, 31,216.89 and 10,423.74

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Solution

The fourth proportional to 20,804.70, 31,216.89 and 10,423.74 is: 15,640.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,804.70 : 31,216.89 = 10,423.74 : x
  2. Step 2: Convert to fraction form
    20,804.70/31,216.89 = 10,423.74/x
  3. Step 3: Cross multiply
    20,804.70x = 31,216.89 × 10,423.74
  4. Step 4: Simplify right side
    20,804.70x = 325,396,744.97
  5. Step 5: Solve for x
    x = 325,396,744.97/20,804.70
  6. Step 6: Final answer
    x = 15,640.54

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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.