Home / 20,867.52-31,300.47-8,383.80

Finding the Fourth Proportional to 20,867.52, 31,300.47 and 8,383.80

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Solution

The fourth proportional to 20,867.52, 31,300.47 and 8,383.80 is: 12,575.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,867.52 : 31,300.47 = 8,383.80 : x
  2. Step 2: Convert to fraction form
    20,867.52/31,300.47 = 8,383.80/x
  3. Step 3: Cross multiply
    20,867.52x = 31,300.47 × 8,383.80
  4. Step 4: Simplify right side
    20,867.52x = 262,416,880.39
  5. Step 5: Solve for x
    x = 262,416,880.39/20,867.52
  6. Step 6: Final answer
    x = 12,575.37

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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.