Home / 21,225,740.78-29,296,655.61-19,789,669.10

Finding the Fourth Proportional to 21,225,740.78, 29,296,655.61 and 19,789,669.10

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Solution

The fourth proportional to 21,225,740.78, 29,296,655.61 and 19,789,669.10 is: 27,314,529.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,225,740.78 : 29,296,655.61 = 19,789,669.10 : x
  2. Step 2: Convert to fraction form
    21,225,740.78/29,296,655.61 = 19,789,669.10/x
  3. Step 3: Cross multiply
    21,225,740.78x = 29,296,655.61 × 19,789,669.10
  4. Step 4: Simplify right side
    21,225,740.78x = 579,771,120,257,589
  5. Step 5: Solve for x
    x = 579,771,120,257,589/21,225,740.78
  6. Step 6: Final answer
    x = 27,314,529.38

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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.