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Finding the Fourth Proportional to 16,840.80, 25,222.80 and 9,928.80

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Solution

The fourth proportional to 16,840.80, 25,222.80 and 9,928.80 is: 14,870.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,840.80 : 25,222.80 = 9,928.80 : x
  2. Step 2: Convert to fraction form
    16,840.80/25,222.80 = 9,928.80/x
  3. Step 3: Cross multiply
    16,840.80x = 25,222.80 × 9,928.80
  4. Step 4: Simplify right side
    16,840.80x = 250,432,136.64
  5. Step 5: Solve for x
    x = 250,432,136.64/16,840.80
  6. Step 6: Final answer
    x = 14,870.56

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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.