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Finding the Fourth Proportional to 13,993.04, 19,323.22 and 8,890.20

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Solution

The fourth proportional to 13,993.04, 19,323.22 and 8,890.20 is: 12,276.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,993.04 : 19,323.22 = 8,890.20 : x
  2. Step 2: Convert to fraction form
    13,993.04/19,323.22 = 8,890.20/x
  3. Step 3: Cross multiply
    13,993.04x = 19,323.22 × 8,890.20
  4. Step 4: Simplify right side
    13,993.04x = 171,787,195.76
  5. Step 5: Solve for x
    x = 171,787,195.76/13,993.04
  6. Step 6: Final answer
    x = 12,276.62

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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.