Home / 14,216.61-19,619.91-7,928.99

Finding the Fourth Proportional to 14,216.61, 19,619.91 and 7,928.99

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Solution

The fourth proportional to 14,216.61, 19,619.91 and 7,928.99 is: 10,942.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,216.61 : 19,619.91 = 7,928.99 : x
  2. Step 2: Convert to fraction form
    14,216.61/19,619.91 = 7,928.99/x
  3. Step 3: Cross multiply
    14,216.61x = 19,619.91 × 7,928.99
  4. Step 4: Simplify right side
    14,216.61x = 155,565,972.09
  5. Step 5: Solve for x
    x = 155,565,972.09/14,216.61
  6. Step 6: Final answer
    x = 10,942.55

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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.