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Finding the Fourth Proportional to 16,600.80, 24,905.60 and 4,915.20

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Solution

The fourth proportional to 16,600.80, 24,905.60 and 4,915.20 is: 7,374.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,600.80 : 24,905.60 = 4,915.20 : x
  2. Step 2: Convert to fraction form
    16,600.80/24,905.60 = 4,915.20/x
  3. Step 3: Cross multiply
    16,600.80x = 24,905.60 × 4,915.20
  4. Step 4: Simplify right side
    16,600.80x = 122,416,005.12
  5. Step 5: Solve for x
    x = 122,416,005.12/16,600.80
  6. Step 6: Final answer
    x = 7,374.10

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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.