Home / 18,891,139.80-28,340,302.14-13,079,832.60

Finding the Fourth Proportional to 18,891,139.80, 28,340,302.14 and 13,079,832.60

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Solution

The fourth proportional to 18,891,139.80, 28,340,302.14 and 13,079,832.60 is: 19,622,236.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,891,139.80 : 28,340,302.14 = 13,079,832.60 : x
  2. Step 2: Convert to fraction form
    18,891,139.80/28,340,302.14 = 13,079,832.60/x
  3. Step 3: Cross multiply
    18,891,139.80x = 28,340,302.14 × 13,079,832.60
  4. Step 4: Simplify right side
    18,891,139.80x = 370,686,407,824,621.75
  5. Step 5: Solve for x
    x = 370,686,407,824,621.75/18,891,139.80
  6. Step 6: Final answer
    x = 19,622,236.23

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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.