Home / 20,883.90-31,329.36-10,354.44

Finding the Fourth Proportional to 20,883.90, 31,329.36 and 10,354.44

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Solution

The fourth proportional to 20,883.90, 31,329.36 and 10,354.44 is: 15,533.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,883.90 : 31,329.36 = 10,354.44 : x
  2. Step 2: Convert to fraction form
    20,883.90/31,329.36 = 10,354.44/x
  3. Step 3: Cross multiply
    20,883.90x = 31,329.36 × 10,354.44
  4. Step 4: Simplify right side
    20,883.90x = 324,397,978.36
  5. Step 5: Solve for x
    x = 324,397,978.36/20,883.90
  6. Step 6: Final answer
    x = 15,533.40

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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.