Home / 20,291,118.51-28,000,993.35-10,998,489.06

Finding the Fourth Proportional to 20,291,118.51, 28,000,993.35 and 10,998,489.06

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Solution

The fourth proportional to 20,291,118.51, 28,000,993.35 and 10,998,489.06 is: 15,177,508.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,291,118.51 : 28,000,993.35 = 10,998,489.06 : x
  2. Step 2: Convert to fraction form
    20,291,118.51/28,000,993.35 = 10,998,489.06/x
  3. Step 3: Cross multiply
    20,291,118.51x = 28,000,993.35 × 10,998,489.06
  4. Step 4: Simplify right side
    20,291,118.51x = 307,968,619,029,107.81
  5. Step 5: Solve for x
    x = 307,968,619,029,107.81/20,291,118.51
  6. Step 6: Final answer
    x = 15,177,508.27

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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.