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Finding the Fourth Proportional to 12,305.93, 16,980.64 and 7,000.83

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Solution

The fourth proportional to 12,305.93, 16,980.64 and 7,000.83 is: 9,660.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,305.93 : 16,980.64 = 7,000.83 : x
  2. Step 2: Convert to fraction form
    12,305.93/16,980.64 = 7,000.83/x
  3. Step 3: Cross multiply
    12,305.93x = 16,980.64 × 7,000.83
  4. Step 4: Simplify right side
    12,305.93x = 118,878,556.43
  5. Step 5: Solve for x
    x = 118,878,556.43/12,305.93
  6. Step 6: Final answer
    x = 9,660.27

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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.