Home / 18,709,606.90-28,059,538.81-7,921,354.60

Finding the Fourth Proportional to 18,709,606.90, 28,059,538.81 and 7,921,354.60

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Solution

The fourth proportional to 18,709,606.90, 28,059,538.81 and 7,921,354.60 is: 11,879,969.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,709,606.90 : 28,059,538.81 = 7,921,354.60 : x
  2. Step 2: Convert to fraction form
    18,709,606.90/28,059,538.81 = 7,921,354.60/x
  3. Step 3: Cross multiply
    18,709,606.90x = 28,059,538.81 × 7,921,354.60
  4. Step 4: Simplify right side
    18,709,606.90x = 222,269,556,856,595.59
  5. Step 5: Solve for x
    x = 222,269,556,856,595.59/18,709,606.90
  6. Step 6: Final answer
    x = 11,879,969.37

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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.