Home / 20,907.22-31,360.71-5,112.34

Finding the Fourth Proportional to 20,907.22, 31,360.71 and 5,112.34

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Solution

The fourth proportional to 20,907.22, 31,360.71 and 5,112.34 is: 7,668.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,907.22 : 31,360.71 = 5,112.34 : x
  2. Step 2: Convert to fraction form
    20,907.22/31,360.71 = 5,112.34/x
  3. Step 3: Cross multiply
    20,907.22x = 31,360.71 × 5,112.34
  4. Step 4: Simplify right side
    20,907.22x = 160,326,612.16
  5. Step 5: Solve for x
    x = 160,326,612.16/20,907.22
  6. Step 6: Final answer
    x = 7,668.48

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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.