Home / 20,187,837.20-30,281,755.80-18,628,943.60

Finding the Fourth Proportional to 20,187,837.20, 30,281,755.80 and 18,628,943.60

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Solution

The fourth proportional to 20,187,837.20, 30,281,755.80 and 18,628,943.60 is: 27,943,415.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,187,837.20 : 30,281,755.80 = 18,628,943.60 : x
  2. Step 2: Convert to fraction form
    20,187,837.20/30,281,755.80 = 18,628,943.60/x
  3. Step 3: Cross multiply
    20,187,837.20x = 30,281,755.80 × 18,628,943.60
  4. Step 4: Simplify right side
    20,187,837.20x = 564,117,120,907,173
  5. Step 5: Solve for x
    x = 564,117,120,907,173/20,187,837.20
  6. Step 6: Final answer
    x = 27,943,415.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.