Home / 20,880.78-31,317.84-6,086.24

Finding the Fourth Proportional to 20,880.78, 31,317.84 and 6,086.24

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Solution

The fourth proportional to 20,880.78, 31,317.84 and 6,086.24 is: 9,128.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,880.78 : 31,317.84 = 6,086.24 : x
  2. Step 2: Convert to fraction form
    20,880.78/31,317.84 = 6,086.24/x
  3. Step 3: Cross multiply
    20,880.78x = 31,317.84 × 6,086.24
  4. Step 4: Simplify right side
    20,880.78x = 190,607,890.52
  5. Step 5: Solve for x
    x = 190,607,890.52/20,880.78
  6. Step 6: Final answer
    x = 9,128.39

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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.