Home / 20,224.40-30,334.55-5,431.40

Finding the Fourth Proportional to 20,224.40, 30,334.55 and 5,431.40

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Solution

The fourth proportional to 20,224.40, 30,334.55 and 5,431.40 is: 8,146.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,224.40 : 30,334.55 = 5,431.40 : x
  2. Step 2: Convert to fraction form
    20,224.40/30,334.55 = 5,431.40/x
  3. Step 3: Cross multiply
    20,224.40x = 30,334.55 × 5,431.40
  4. Step 4: Simplify right side
    20,224.40x = 164,758,955.03
  5. Step 5: Solve for x
    x = 164,758,955.03/20,224.40
  6. Step 6: Final answer
    x = 8,146.54

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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.