Home / 20,290.35-30,435.52-7,816.25

Finding the Fourth Proportional to 20,290.35, 30,435.52 and 7,816.25

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Solution

The fourth proportional to 20,290.35, 30,435.52 and 7,816.25 is: 11,724.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,290.35 : 30,435.52 = 7,816.25 : x
  2. Step 2: Convert to fraction form
    20,290.35/30,435.52 = 7,816.25/x
  3. Step 3: Cross multiply
    20,290.35x = 30,435.52 × 7,816.25
  4. Step 4: Simplify right side
    20,290.35x = 237,891,555.19
  5. Step 5: Solve for x
    x = 237,891,555.19/20,290.35
  6. Step 6: Final answer
    x = 11,724.37

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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.