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Finding the Fourth Proportional to 12,805,918.70, 17,671,792.07 and 7,004,574.97

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Solution

The fourth proportional to 12,805,918.70, 17,671,792.07 and 7,004,574.97 is: 9,666,107.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,805,918.70 : 17,671,792.07 = 7,004,574.97 : x
  2. Step 2: Convert to fraction form
    12,805,918.70/17,671,792.07 = 7,004,574.97/x
  3. Step 3: Cross multiply
    12,805,918.70x = 17,671,792.07 × 7,004,574.97
  4. Step 4: Simplify right side
    12,805,918.70x = 123,783,392,381,898.47
  5. Step 5: Solve for x
    x = 123,783,392,381,898.47/12,805,918.70
  6. Step 6: Final answer
    x = 9,666,107.94

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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.