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Finding the Fourth Proportional to 12,303.82, 16,979.34 and 6,998.32

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Solution

The fourth proportional to 12,303.82, 16,979.34 and 6,998.32 is: 9,657.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,303.82 : 16,979.34 = 6,998.32 : x
  2. Step 2: Convert to fraction form
    12,303.82/16,979.34 = 6,998.32/x
  3. Step 3: Cross multiply
    12,303.82x = 16,979.34 × 6,998.32
  4. Step 4: Simplify right side
    12,303.82x = 118,826,854.71
  5. Step 5: Solve for x
    x = 118,826,854.71/12,303.82
  6. Step 6: Final answer
    x = 9,657.72

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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.