Home / 20,915.18-31,370.48-6,124.25

Finding the Fourth Proportional to 20,915.18, 31,370.48 and 6,124.25

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Solution

The fourth proportional to 20,915.18, 31,370.48 and 6,124.25 is: 9,185.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,915.18 : 31,370.48 = 6,124.25 : x
  2. Step 2: Convert to fraction form
    20,915.18/31,370.48 = 6,124.25/x
  3. Step 3: Cross multiply
    20,915.18x = 31,370.48 × 6,124.25
  4. Step 4: Simplify right side
    20,915.18x = 192,120,497.63
  5. Step 5: Solve for x
    x = 192,120,497.63/20,915.18
  6. Step 6: Final answer
    x = 9,185.70

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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.