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Finding the Fourth Proportional to 16,815.21, 25,221.06 and 7,455.39

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Solution

The fourth proportional to 16,815.21, 25,221.06 and 7,455.39 is: 11,182.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,815.21 : 25,221.06 = 7,455.39 : x
  2. Step 2: Convert to fraction form
    16,815.21/25,221.06 = 7,455.39/x
  3. Step 3: Cross multiply
    16,815.21x = 25,221.06 × 7,455.39
  4. Step 4: Simplify right side
    16,815.21x = 188,032,838.51
  5. Step 5: Solve for x
    x = 188,032,838.51/16,815.21
  6. Step 6: Final answer
    x = 11,182.31

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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.