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Finding the Fourth Proportional to 12,293.91, 16,966.08 and 6,989.22

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Solution

The fourth proportional to 12,293.91, 16,966.08 and 6,989.22 is: 9,645.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,293.91 : 16,966.08 = 6,989.22 : x
  2. Step 2: Convert to fraction form
    12,293.91/16,966.08 = 6,989.22/x
  3. Step 3: Cross multiply
    12,293.91x = 16,966.08 × 6,989.22
  4. Step 4: Simplify right side
    12,293.91x = 118,579,665.66
  5. Step 5: Solve for x
    x = 118,579,665.66/12,293.91
  6. Step 6: Final answer
    x = 9,645.40

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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.