Home / 28,204,495.82-38,907,879.68-18,420,667.01

Finding the Fourth Proportional to 28,204,495.82, 38,907,879.68 and 18,420,667.01

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Solution

The fourth proportional to 28,204,495.82, 38,907,879.68 and 18,420,667.01 is: 25,411,164.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,204,495.82 : 38,907,879.68 = 18,420,667.01 : x
  2. Step 2: Convert to fraction form
    28,204,495.82/38,907,879.68 = 18,420,667.01/x
  3. Step 3: Cross multiply
    28,204,495.82x = 38,907,879.68 × 18,420,667.01
  4. Step 4: Simplify right side
    28,204,495.82x = 716,709,095,363,782.50
  5. Step 5: Solve for x
    x = 716,709,095,363,782.50/28,204,495.82
  6. Step 6: Final answer
    x = 25,411,164.95

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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.