Home / 20,301.58-30,445.46-7,820.56

Finding the Fourth Proportional to 20,301.58, 30,445.46 and 7,820.56

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Solution

The fourth proportional to 20,301.58, 30,445.46 and 7,820.56 is: 11,728.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,301.58 : 30,445.46 = 7,820.56 : x
  2. Step 2: Convert to fraction form
    20,301.58/30,445.46 = 7,820.56/x
  3. Step 3: Cross multiply
    20,301.58x = 30,445.46 × 7,820.56
  4. Step 4: Simplify right side
    20,301.58x = 238,100,546.66
  5. Step 5: Solve for x
    x = 238,100,546.66/20,301.58
  6. Step 6: Final answer
    x = 11,728.18

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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.