Home / 21,107,792.72-29,128,763.40-11,940,240.08

Finding the Fourth Proportional to 21,107,792.72, 29,128,763.40 and 11,940,240.08

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Solution

The fourth proportional to 21,107,792.72, 29,128,763.40 and 11,940,240.08 is: 16,477,536.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,107,792.72 : 29,128,763.40 = 11,940,240.08 : x
  2. Step 2: Convert to fraction form
    21,107,792.72/29,128,763.40 = 11,940,240.08/x
  3. Step 3: Cross multiply
    21,107,792.72x = 29,128,763.40 × 11,940,240.08
  4. Step 4: Simplify right side
    21,107,792.72x = 347,804,428,229,517.06
  5. Step 5: Solve for x
    x = 347,804,428,229,517.06/21,107,792.72
  6. Step 6: Final answer
    x = 16,477,536.65

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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.