Home / 9,915.66-13,684.74-5,937.78

Finding the Fourth Proportional to 9,915.66, 13,684.74 and 5,937.78

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Solution

The fourth proportional to 9,915.66, 13,684.74 and 5,937.78 is: 8,194.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,915.66 : 13,684.74 = 5,937.78 : x
  2. Step 2: Convert to fraction form
    9,915.66/13,684.74 = 5,937.78/x
  3. Step 3: Cross multiply
    9,915.66x = 13,684.74 × 5,937.78
  4. Step 4: Simplify right side
    9,915.66x = 81,256,975.48
  5. Step 5: Solve for x
    x = 81,256,975.48/9,915.66
  6. Step 6: Final answer
    x = 8,194.81

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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.