Home / 20,172.46-30,258.60-7,689.64

Finding the Fourth Proportional to 20,172.46, 30,258.60 and 7,689.64

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Solution

The fourth proportional to 20,172.46, 30,258.60 and 7,689.64 is: 11,534.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,172.46 : 30,258.60 = 7,689.64 : x
  2. Step 2: Convert to fraction form
    20,172.46/30,258.60 = 7,689.64/x
  3. Step 3: Cross multiply
    20,172.46x = 30,258.60 × 7,689.64
  4. Step 4: Simplify right side
    20,172.46x = 232,677,740.90
  5. Step 5: Solve for x
    x = 232,677,740.90/20,172.46
  6. Step 6: Final answer
    x = 11,534.43

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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.