Home / 20,980,696.16-28,945,680.45-12,714,795.38

Finding the Fourth Proportional to 20,980,696.16, 28,945,680.45 and 12,714,795.38

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Solution

The fourth proportional to 20,980,696.16, 28,945,680.45 and 12,714,795.38 is: 17,541,763.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,980,696.16 : 28,945,680.45 = 12,714,795.38 : x
  2. Step 2: Convert to fraction form
    20,980,696.16/28,945,680.45 = 12,714,795.38/x
  3. Step 3: Cross multiply
    20,980,696.16x = 28,945,680.45 × 12,714,795.38
  4. Step 4: Simplify right side
    20,980,696.16x = 368,038,404,056,616.31
  5. Step 5: Solve for x
    x = 368,038,404,056,616.31/20,980,696.16
  6. Step 6: Final answer
    x = 17,541,763.21

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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.