Home / 20,915.48-31,362.77-6,682.07

Finding the Fourth Proportional to 20,915.48, 31,362.77 and 6,682.07

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Solution

The fourth proportional to 20,915.48, 31,362.77 and 6,682.07 is: 10,019.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,915.48 : 31,362.77 = 6,682.07 : x
  2. Step 2: Convert to fraction form
    20,915.48/31,362.77 = 6,682.07/x
  3. Step 3: Cross multiply
    20,915.48x = 31,362.77 × 6,682.07
  4. Step 4: Simplify right side
    20,915.48x = 209,568,319.65
  5. Step 5: Solve for x
    x = 209,568,319.65/20,915.48
  6. Step 6: Final answer
    x = 10,019.77

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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.