Home / 18,909,969.70-28,361,017.95-8,127,622.30

Finding the Fourth Proportional to 18,909,969.70, 28,361,017.95 and 8,127,622.30

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Solution

The fourth proportional to 18,909,969.70, 28,361,017.95 and 8,127,622.30 is: 12,189,741.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,909,969.70 : 28,361,017.95 = 8,127,622.30 : x
  2. Step 2: Convert to fraction form
    18,909,969.70/28,361,017.95 = 8,127,622.30/x
  3. Step 3: Cross multiply
    18,909,969.70x = 28,361,017.95 × 8,127,622.30
  4. Step 4: Simplify right side
    18,909,969.70x = 230,507,641,941,120.28
  5. Step 5: Solve for x
    x = 230,507,641,941,120.28/18,909,969.70
  6. Step 6: Final answer
    x = 12,189,741.47

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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.