Home / 20,834.33-31,237.61-11,478.74

Finding the Fourth Proportional to 20,834.33, 31,237.61 and 11,478.74

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Solution

The fourth proportional to 20,834.33, 31,237.61 and 11,478.74 is: 17,210.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,834.33 : 31,237.61 = 11,478.74 : x
  2. Step 2: Convert to fraction form
    20,834.33/31,237.61 = 11,478.74/x
  3. Step 3: Cross multiply
    20,834.33x = 31,237.61 × 11,478.74
  4. Step 4: Simplify right side
    20,834.33x = 358,568,189.83
  5. Step 5: Solve for x
    x = 358,568,189.83/20,834.33
  6. Step 6: Final answer
    x = 17,210.45

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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.