Home / 20,915.37-31,370.76-6,124.43

Finding the Fourth Proportional to 20,915.37, 31,370.76 and 6,124.43

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Solution

The fourth proportional to 20,915.37, 31,370.76 and 6,124.43 is: 9,185.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,915.37 : 31,370.76 = 6,124.43 : x
  2. Step 2: Convert to fraction form
    20,915.37/31,370.76 = 6,124.43/x
  3. Step 3: Cross multiply
    20,915.37x = 31,370.76 × 6,124.43
  4. Step 4: Simplify right side
    20,915.37x = 192,128,102.09
  5. Step 5: Solve for x
    x = 192,128,102.09/20,915.37
  6. Step 6: Final answer
    x = 9,185.98

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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.