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Finding the Fourth Proportional to 10,915.88, 16,374.88 and 4,340.60

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Solution

The fourth proportional to 10,915.88, 16,374.88 and 4,340.60 is: 6,511.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,915.88 : 16,374.88 = 4,340.60 : x
  2. Step 2: Convert to fraction form
    10,915.88/16,374.88 = 4,340.60/x
  3. Step 3: Cross multiply
    10,915.88x = 16,374.88 × 4,340.60
  4. Step 4: Simplify right side
    10,915.88x = 71,076,804.13
  5. Step 5: Solve for x
    x = 71,076,804.13/10,915.88
  6. Step 6: Final answer
    x = 6,511.32

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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.