Home / 20,772.48-31,161.84-6,918.24

Finding the Fourth Proportional to 20,772.48, 31,161.84 and 6,918.24

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Solution

The fourth proportional to 20,772.48, 31,161.84 and 6,918.24 is: 10,378.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,772.48 : 31,161.84 = 6,918.24 : x
  2. Step 2: Convert to fraction form
    20,772.48/31,161.84 = 6,918.24/x
  3. Step 3: Cross multiply
    20,772.48x = 31,161.84 × 6,918.24
  4. Step 4: Simplify right side
    20,772.48x = 215,585,087.96
  5. Step 5: Solve for x
    x = 215,585,087.96/20,772.48
  6. Step 6: Final answer
    x = 10,378.40

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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.