Home / 20,693.52-31,040.10-8,216.37

Finding the Fourth Proportional to 20,693.52, 31,040.10 and 8,216.37

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Solution

The fourth proportional to 20,693.52, 31,040.10 and 8,216.37 is: 12,324.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,693.52 : 31,040.10 = 8,216.37 : x
  2. Step 2: Convert to fraction form
    20,693.52/31,040.10 = 8,216.37/x
  3. Step 3: Cross multiply
    20,693.52x = 31,040.10 × 8,216.37
  4. Step 4: Simplify right side
    20,693.52x = 255,036,946.44
  5. Step 5: Solve for x
    x = 255,036,946.44/20,693.52
  6. Step 6: Final answer
    x = 12,324.48

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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.