Home / 20,951.46-31,405.32-9,258.30

Finding the Fourth Proportional to 20,951.46, 31,405.32 and 9,258.30

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Solution

The fourth proportional to 20,951.46, 31,405.32 and 9,258.30 is: 13,877.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,951.46 : 31,405.32 = 9,258.30 : x
  2. Step 2: Convert to fraction form
    20,951.46/31,405.32 = 9,258.30/x
  3. Step 3: Cross multiply
    20,951.46x = 31,405.32 × 9,258.30
  4. Step 4: Simplify right side
    20,951.46x = 290,759,874.16
  5. Step 5: Solve for x
    x = 290,759,874.16/20,951.46
  6. Step 6: Final answer
    x = 13,877.79

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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.