Home / 20,308.07-30,454.03-7,821.18

Finding the Fourth Proportional to 20,308.07, 30,454.03 and 7,821.18

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Solution

The fourth proportional to 20,308.07, 30,454.03 and 7,821.18 is: 11,728.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,308.07 : 30,454.03 = 7,821.18 : x
  2. Step 2: Convert to fraction form
    20,308.07/30,454.03 = 7,821.18/x
  3. Step 3: Cross multiply
    20,308.07x = 30,454.03 × 7,821.18
  4. Step 4: Simplify right side
    20,308.07x = 238,186,450.36
  5. Step 5: Solve for x
    x = 238,186,450.36/20,308.07
  6. Step 6: Final answer
    x = 11,728.66

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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.