Home / 21,270.21-31,907.12-6,479.25

Finding the Fourth Proportional to 21,270.21, 31,907.12 and 6,479.25

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Solution

The fourth proportional to 21,270.21, 31,907.12 and 6,479.25 is: 9,719.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,270.21 : 31,907.12 = 6,479.25 : x
  2. Step 2: Convert to fraction form
    21,270.21/31,907.12 = 6,479.25/x
  3. Step 3: Cross multiply
    21,270.21x = 31,907.12 × 6,479.25
  4. Step 4: Simplify right side
    21,270.21x = 206,734,207.26
  5. Step 5: Solve for x
    x = 206,734,207.26/21,270.21
  6. Step 6: Final answer
    x = 9,719.42

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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.