Home / 12,950,436.60-17,871,747.12-7,149,221.28

Finding the Fourth Proportional to 12,950,436.60, 17,871,747.12 and 7,149,221.28

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Solution

The fourth proportional to 12,950,436.60, 17,871,747.12 and 7,149,221.28 is: 9,866,005.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,950,436.60 : 17,871,747.12 = 7,149,221.28 : x
  2. Step 2: Convert to fraction form
    12,950,436.60/17,871,747.12 = 7,149,221.28/x
  3. Step 3: Cross multiply
    12,950,436.60x = 17,871,747.12 × 7,149,221.28
  4. Step 4: Simplify right side
    12,950,436.60x = 127,769,074,821,082.72
  5. Step 5: Solve for x
    x = 127,769,074,821,082.72/12,950,436.60
  6. Step 6: Final answer
    x = 9,866,005.20

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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.