Home / 13,684.19-20,520.81-5,790.33

Finding the Fourth Proportional to 13,684.19, 20,520.81 and 5,790.33

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Solution

The fourth proportional to 13,684.19, 20,520.81 and 5,790.33 is: 8,683.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,684.19 : 20,520.81 = 5,790.33 : x
  2. Step 2: Convert to fraction form
    13,684.19/20,520.81 = 5,790.33/x
  3. Step 3: Cross multiply
    13,684.19x = 20,520.81 × 5,790.33
  4. Step 4: Simplify right side
    13,684.19x = 118,822,261.77
  5. Step 5: Solve for x
    x = 118,822,261.77/13,684.19
  6. Step 6: Final answer
    x = 8,683.18

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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.