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Finding the Fourth Proportional to 21,059.35, 31,580.97 and 7,016.68

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Solution

The fourth proportional to 21,059.35, 31,580.97 and 7,016.68 is: 10,522.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,059.35 : 31,580.97 = 7,016.68 : x
  2. Step 2: Convert to fraction form
    21,059.35/31,580.97 = 7,016.68/x
  3. Step 3: Cross multiply
    21,059.35x = 31,580.97 × 7,016.68
  4. Step 4: Simplify right side
    21,059.35x = 221,593,560.58
  5. Step 5: Solve for x
    x = 221,593,560.58/21,059.35
  6. Step 6: Final answer
    x = 10,522.34

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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.