Home / 12,303.89-16,979.39-6,998.79

Finding the Fourth Proportional to 12,303.89, 16,979.39 and 6,998.79

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Solution

The fourth proportional to 12,303.89, 16,979.39 and 6,998.79 is: 9,658.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,303.89 : 16,979.39 = 6,998.79 : x
  2. Step 2: Convert to fraction form
    12,303.89/16,979.39 = 6,998.79/x
  3. Step 3: Cross multiply
    12,303.89x = 16,979.39 × 6,998.79
  4. Step 4: Simplify right side
    12,303.89x = 118,835,184.94
  5. Step 5: Solve for x
    x = 118,835,184.94/12,303.89
  6. Step 6: Final answer
    x = 9,658.34

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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.