Home / 18,387,812.73-25,375,352.72-10,128,168.21

Finding the Fourth Proportional to 18,387,812.73, 25,375,352.72 and 10,128,168.21

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Solution

The fourth proportional to 18,387,812.73, 25,375,352.72 and 10,128,168.21 is: 13,976,966.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,387,812.73 : 25,375,352.72 = 10,128,168.21 : x
  2. Step 2: Convert to fraction form
    18,387,812.73/25,375,352.72 = 10,128,168.21/x
  3. Step 3: Cross multiply
    18,387,812.73x = 25,375,352.72 × 10,128,168.21
  4. Step 4: Simplify right side
    18,387,812.73x = 257,005,840,685,600.22
  5. Step 5: Solve for x
    x = 257,005,840,685,600.22/18,387,812.73
  6. Step 6: Final answer
    x = 13,976,966.40

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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.