Home / 13,131,990.18-17,990,742.51-12,640,916.16

Finding the Fourth Proportional to 13,131,990.18, 17,990,742.51 and 12,640,916.16

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Solution

The fourth proportional to 13,131,990.18, 17,990,742.51 and 12,640,916.16 is: 17,317,974.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,131,990.18 : 17,990,742.51 = 12,640,916.16 : x
  2. Step 2: Convert to fraction form
    13,131,990.18/17,990,742.51 = 12,640,916.16/x
  3. Step 3: Cross multiply
    13,131,990.18x = 17,990,742.51 × 12,640,916.16
  4. Step 4: Simplify right side
    13,131,990.18x = 227,419,467,725,058
  5. Step 5: Solve for x
    x = 227,419,467,725,058/13,131,990.18
  6. Step 6: Final answer
    x = 17,317,974.25

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.