Home / 20,474.64-30,706.29-8,785.26

Finding the Fourth Proportional to 20,474.64, 30,706.29 and 8,785.26

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Solution

The fourth proportional to 20,474.64, 30,706.29 and 8,785.26 is: 13,175.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,474.64 : 30,706.29 = 8,785.26 : x
  2. Step 2: Convert to fraction form
    20,474.64/30,706.29 = 8,785.26/x
  3. Step 3: Cross multiply
    20,474.64x = 30,706.29 × 8,785.26
  4. Step 4: Simplify right side
    20,474.64x = 269,762,741.29
  5. Step 5: Solve for x
    x = 269,762,741.29/20,474.64
  6. Step 6: Final answer
    x = 13,175.46

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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.