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Finding the Fourth Proportional to 14,216.21, 19,618.41 and 7,928.99

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Solution

The fourth proportional to 14,216.21, 19,618.41 and 7,928.99 is: 10,942.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,216.21 : 19,618.41 = 7,928.99 : x
  2. Step 2: Convert to fraction form
    14,216.21/19,618.41 = 7,928.99/x
  3. Step 3: Cross multiply
    14,216.21x = 19,618.41 × 7,928.99
  4. Step 4: Simplify right side
    14,216.21x = 155,554,176.71
  5. Step 5: Solve for x
    x = 155,554,176.71/14,216.21
  6. Step 6: Final answer
    x = 10,942.03

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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.