Home / 20,555.15-30,792.89-13,513.92

Finding the Fourth Proportional to 20,555.15, 30,792.89 and 13,513.92

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Solution

The fourth proportional to 20,555.15, 30,792.89 and 13,513.92 is: 20,244.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,555.15 : 30,792.89 = 13,513.92 : x
  2. Step 2: Convert to fraction form
    20,555.15/30,792.89 = 13,513.92/x
  3. Step 3: Cross multiply
    20,555.15x = 30,792.89 × 13,513.92
  4. Step 4: Simplify right side
    20,555.15x = 416,132,584.46
  5. Step 5: Solve for x
    x = 416,132,584.46/20,555.15
  6. Step 6: Final answer
    x = 20,244.69

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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.