Home / 12,078,768-16,668,816.48-6,646,376.64

Finding the Fourth Proportional to 12,078,768, 16,668,816.48 and 6,646,376.64

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Solution

The fourth proportional to 12,078,768, 16,668,816.48 and 6,646,376.64 is: 9,172,063.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,078,768 : 16,668,816.48 = 6,646,376.64 : x
  2. Step 2: Convert to fraction form
    12,078,768/16,668,816.48 = 6,646,376.64/x
  3. Step 3: Cross multiply
    12,078,768x = 16,668,816.48 × 6,646,376.64
  4. Step 4: Simplify right side
    12,078,768x = 110,787,232,469,119.03
  5. Step 5: Solve for x
    x = 110,787,232,469,119.03/12,078,768
  6. Step 6: Final answer
    x = 9,172,063.94

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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.