Home / 20,185.33-30,281.07-10,321.28

Finding the Fourth Proportional to 20,185.33, 30,281.07 and 10,321.28

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Solution

The fourth proportional to 20,185.33, 30,281.07 and 10,321.28 is: 15,483.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,185.33 : 30,281.07 = 10,321.28 : x
  2. Step 2: Convert to fraction form
    20,185.33/30,281.07 = 10,321.28/x
  3. Step 3: Cross multiply
    20,185.33x = 30,281.07 × 10,321.28
  4. Step 4: Simplify right side
    20,185.33x = 312,539,250.76
  5. Step 5: Solve for x
    x = 312,539,250.76/20,185.33
  6. Step 6: Final answer
    x = 15,483.49

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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.