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Finding the Fourth Proportional to 14,455.97, 19,948.97 and 8,168.21

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Solution

The fourth proportional to 14,455.97, 19,948.97 and 8,168.21 is: 11,271.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,455.97 : 19,948.97 = 8,168.21 : x
  2. Step 2: Convert to fraction form
    14,455.97/19,948.97 = 8,168.21/x
  3. Step 3: Cross multiply
    14,455.97x = 19,948.97 × 8,168.21
  4. Step 4: Simplify right side
    14,455.97x = 162,947,296.92
  5. Step 5: Solve for x
    x = 162,947,296.92/14,455.97
  6. Step 6: Final answer
    x = 11,271.98

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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.