Home / 12,629,628.75-17,428,872.84-6,828,396.72

Finding the Fourth Proportional to 12,629,628.75, 17,428,872.84 and 6,828,396.72

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Solution

The fourth proportional to 12,629,628.75, 17,428,872.84 and 6,828,396.72 is: 9,423,179.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,629,628.75 : 17,428,872.84 = 6,828,396.72 : x
  2. Step 2: Convert to fraction form
    12,629,628.75/17,428,872.84 = 6,828,396.72/x
  3. Step 3: Cross multiply
    12,629,628.75x = 17,428,872.84 × 6,828,396.72
  4. Step 4: Simplify right side
    12,629,628.75x = 119,011,258,133,953.08
  5. Step 5: Solve for x
    x = 119,011,258,133,953.08/12,629,628.75
  6. Step 6: Final answer
    x = 9,423,179.45

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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.