Home / 21,145.23-31,720.46-6,913.37

Finding the Fourth Proportional to 21,145.23, 31,720.46 and 6,913.37

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Solution

The fourth proportional to 21,145.23, 31,720.46 and 6,913.37 is: 10,370.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,145.23 : 31,720.46 = 6,913.37 : x
  2. Step 2: Convert to fraction form
    21,145.23/31,720.46 = 6,913.37/x
  3. Step 3: Cross multiply
    21,145.23x = 31,720.46 × 6,913.37
  4. Step 4: Simplify right side
    21,145.23x = 219,295,321.28
  5. Step 5: Solve for x
    x = 219,295,321.28/21,145.23
  6. Step 6: Final answer
    x = 10,370.91

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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.