Home / 20,735.90-31,105.48-10,211.58

Finding the Fourth Proportional to 20,735.90, 31,105.48 and 10,211.58

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Solution

The fourth proportional to 20,735.90, 31,105.48 and 10,211.58 is: 15,318.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,735.90 : 31,105.48 = 10,211.58 : x
  2. Step 2: Convert to fraction form
    20,735.90/31,105.48 = 10,211.58/x
  3. Step 3: Cross multiply
    20,735.90x = 31,105.48 × 10,211.58
  4. Step 4: Simplify right side
    20,735.90x = 317,636,097.46
  5. Step 5: Solve for x
    x = 317,636,097.46/20,735.90
  6. Step 6: Final answer
    x = 15,318.17

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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.