Home / 13,139,480.40-18,122,073.48-7,982,696.40

Finding the Fourth Proportional to 13,139,480.40, 18,122,073.48 and 7,982,696.40

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Solution

The fourth proportional to 13,139,480.40, 18,122,073.48 and 7,982,696.40 is: 11,009,796.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,139,480.40 : 18,122,073.48 = 7,982,696.40 : x
  2. Step 2: Convert to fraction form
    13,139,480.40/18,122,073.48 = 7,982,696.40/x
  3. Step 3: Cross multiply
    13,139,480.40x = 18,122,073.48 × 7,982,696.40
  4. Step 4: Simplify right side
    13,139,480.40x = 144,663,010,729,331.47
  5. Step 5: Solve for x
    x = 144,663,010,729,331.47/13,139,480.40
  6. Step 6: Final answer
    x = 11,009,796.91

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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.