Home / 12,950,386.92-17,871,678.81-7,149,171.78

Finding the Fourth Proportional to 12,950,386.92, 17,871,678.81 and 7,149,171.78

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Solution

The fourth proportional to 12,950,386.92, 17,871,678.81 and 7,149,171.78 is: 9,865,937.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,950,386.92 : 17,871,678.81 = 7,149,171.78 : x
  2. Step 2: Convert to fraction form
    12,950,386.92/17,871,678.81 = 7,149,171.78/x
  3. Step 3: Cross multiply
    12,950,386.92x = 17,871,678.81 × 7,149,171.78
  4. Step 4: Simplify right side
    12,950,386.92x = 127,767,701,809,675.98
  5. Step 5: Solve for x
    x = 127,767,701,809,675.98/12,950,386.92
  6. Step 6: Final answer
    x = 9,865,937.03

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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.