Home / 20,987,078.08-28,975,540.08-17,128,802.56

Finding the Fourth Proportional to 20,987,078.08, 28,975,540.08 and 17,128,802.56

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Solution

The fourth proportional to 20,987,078.08, 28,975,540.08 and 17,128,802.56 is: 23,648,661.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,987,078.08 : 28,975,540.08 = 17,128,802.56 : x
  2. Step 2: Convert to fraction form
    20,987,078.08/28,975,540.08 = 17,128,802.56/x
  3. Step 3: Cross multiply
    20,987,078.08x = 28,975,540.08 × 17,128,802.56
  4. Step 4: Simplify right side
    20,987,078.08x = 496,316,305,099,686.56
  5. Step 5: Solve for x
    x = 496,316,305,099,686.56/20,987,078.08
  6. Step 6: Final answer
    x = 23,648,661.49

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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.