Home / 20,762.33-31,145.34-8,913.43

Finding the Fourth Proportional to 20,762.33, 31,145.34 and 8,913.43

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Solution

The fourth proportional to 20,762.33, 31,145.34 and 8,913.43 is: 13,370.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,762.33 : 31,145.34 = 8,913.43 : x
  2. Step 2: Convert to fraction form
    20,762.33/31,145.34 = 8,913.43/x
  3. Step 3: Cross multiply
    20,762.33x = 31,145.34 × 8,913.43
  4. Step 4: Simplify right side
    20,762.33x = 277,611,629.87
  5. Step 5: Solve for x
    x = 277,611,629.87/20,762.33
  6. Step 6: Final answer
    x = 13,370.93

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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.