Home / 20,305.07-30,449.53-7,818.18

Finding the Fourth Proportional to 20,305.07, 30,449.53 and 7,818.18

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Solution

The fourth proportional to 20,305.07, 30,449.53 and 7,818.18 is: 11,724.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,305.07 : 30,449.53 = 7,818.18 : x
  2. Step 2: Convert to fraction form
    20,305.07/30,449.53 = 7,818.18/x
  3. Step 3: Cross multiply
    20,305.07x = 30,449.53 × 7,818.18
  4. Step 4: Simplify right side
    20,305.07x = 238,059,906.46
  5. Step 5: Solve for x
    x = 238,059,906.46/20,305.07
  6. Step 6: Final answer
    x = 11,724.16

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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.