Home / 11,121.75-15,348.51-6,153.75

Finding the Fourth Proportional to 11,121.75, 15,348.51 and 6,153.75

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Solution

The fourth proportional to 11,121.75, 15,348.51 and 6,153.75 is: 8,492.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,121.75 : 15,348.51 = 6,153.75 : x
  2. Step 2: Convert to fraction form
    11,121.75/15,348.51 = 6,153.75/x
  3. Step 3: Cross multiply
    11,121.75x = 15,348.51 × 6,153.75
  4. Step 4: Simplify right side
    11,121.75x = 94,450,893.41
  5. Step 5: Solve for x
    x = 94,450,893.41/11,121.75
  6. Step 6: Final answer
    x = 8,492.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.