Home / 13,129,111.36-18,116,502.60-7,328,137.60

Finding the Fourth Proportional to 13,129,111.36, 18,116,502.60 and 7,328,137.60

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Solution

The fourth proportional to 13,129,111.36, 18,116,502.60 and 7,328,137.60 is: 10,111,897.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,129,111.36 : 18,116,502.60 = 7,328,137.60 : x
  2. Step 2: Convert to fraction form
    13,129,111.36/18,116,502.60 = 7,328,137.60/x
  3. Step 3: Cross multiply
    13,129,111.36x = 18,116,502.60 × 7,328,137.60
  4. Step 4: Simplify right side
    13,129,111.36x = 132,760,223,883,557.77
  5. Step 5: Solve for x
    x = 132,760,223,883,557.77/13,129,111.36
  6. Step 6: Final answer
    x = 10,111,897.16

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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.