Home / 11,915.50-16,444.12-6,880.64

Finding the Fourth Proportional to 11,915.50, 16,444.12 and 6,880.64

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Solution

The fourth proportional to 11,915.50, 16,444.12 and 6,880.64 is: 9,495.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,915.50 : 16,444.12 = 6,880.64 : x
  2. Step 2: Convert to fraction form
    11,915.50/16,444.12 = 6,880.64/x
  3. Step 3: Cross multiply
    11,915.50x = 16,444.12 × 6,880.64
  4. Step 4: Simplify right side
    11,915.50x = 113,146,069.84
  5. Step 5: Solve for x
    x = 113,146,069.84/11,915.50
  6. Step 6: Final answer
    x = 9,495.70

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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.