Home / 20,746.71-28,626.16-12,131.23

Finding the Fourth Proportional to 20,746.71, 28,626.16 and 12,131.23

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Solution

The fourth proportional to 20,746.71, 28,626.16 and 12,131.23 is: 16,738.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,746.71 : 28,626.16 = 12,131.23 : x
  2. Step 2: Convert to fraction form
    20,746.71/28,626.16 = 12,131.23/x
  3. Step 3: Cross multiply
    20,746.71x = 28,626.16 × 12,131.23
  4. Step 4: Simplify right side
    20,746.71x = 347,270,632.87
  5. Step 5: Solve for x
    x = 347,270,632.87/20,746.71
  6. Step 6: Final answer
    x = 16,738.59

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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.