Home / 20,883.15-31,328.24-10,353.69

Finding the Fourth Proportional to 20,883.15, 31,328.24 and 10,353.69

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Solution

The fourth proportional to 20,883.15, 31,328.24 and 10,353.69 is: 15,532.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,883.15 : 31,328.24 = 10,353.69 : x
  2. Step 2: Convert to fraction form
    20,883.15/31,328.24 = 10,353.69/x
  3. Step 3: Cross multiply
    20,883.15x = 31,328.24 × 10,353.69
  4. Step 4: Simplify right side
    20,883.15x = 324,362,833.44
  5. Step 5: Solve for x
    x = 324,362,833.44/20,883.15
  6. Step 6: Final answer
    x = 15,532.28

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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.