Home / 21,952,591-30,305,106.40-15,431,810.20

Finding the Fourth Proportional to 21,952,591, 30,305,106.40 and 15,431,810.20

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Solution

The fourth proportional to 21,952,591, 30,305,106.40 and 15,431,810.20 is: 21,303,300.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,952,591 : 30,305,106.40 = 15,431,810.20 : x
  2. Step 2: Convert to fraction form
    21,952,591/30,305,106.40 = 15,431,810.20/x
  3. Step 3: Cross multiply
    21,952,591x = 30,305,106.40 × 15,431,810.20
  4. Step 4: Simplify right side
    21,952,591x = 467,662,650,055,605.25
  5. Step 5: Solve for x
    x = 467,662,650,055,605.25/21,952,591
  6. Step 6: Final answer
    x = 21,303,300.83

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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.