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Finding the Fourth Proportional to 12,601.16, 18,909.06 and 6,979.40

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Solution

The fourth proportional to 12,601.16, 18,909.06 and 6,979.40 is: 10,473.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,601.16 : 18,909.06 = 6,979.40 : x
  2. Step 2: Convert to fraction form
    12,601.16/18,909.06 = 6,979.40/x
  3. Step 3: Cross multiply
    12,601.16x = 18,909.06 × 6,979.40
  4. Step 4: Simplify right side
    12,601.16x = 131,973,893.36
  5. Step 5: Solve for x
    x = 131,973,893.36/12,601.16
  6. Step 6: Final answer
    x = 10,473.15

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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.