Home / 21,038,791.20-31,558,186.80-17,256,544.80

Finding the Fourth Proportional to 21,038,791.20, 31,558,186.80 and 17,256,544.80

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Solution

The fourth proportional to 21,038,791.20, 31,558,186.80 and 17,256,544.80 is: 25,884,817.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,038,791.20 : 31,558,186.80 = 17,256,544.80 : x
  2. Step 2: Convert to fraction form
    21,038,791.20/31,558,186.80 = 17,256,544.80/x
  3. Step 3: Cross multiply
    21,038,791.20x = 31,558,186.80 × 17,256,544.80
  4. Step 4: Simplify right side
    21,038,791.20x = 544,585,264,320,968.69
  5. Step 5: Solve for x
    x = 544,585,264,320,968.69/21,038,791.20
  6. Step 6: Final answer
    x = 25,884,817.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.