Home / 28,380,665.60-42,522,009.60-13,203,468.80

Finding the Fourth Proportional to 28,380,665.60, 42,522,009.60 and 13,203,468.80

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Solution

The fourth proportional to 28,380,665.60, 42,522,009.60 and 13,203,468.80 is: 19,782,412.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,380,665.60 : 42,522,009.60 = 13,203,468.80 : x
  2. Step 2: Convert to fraction form
    28,380,665.60/42,522,009.60 = 13,203,468.80/x
  3. Step 3: Cross multiply
    28,380,665.60x = 42,522,009.60 × 13,203,468.80
  4. Step 4: Simplify right side
    28,380,665.60x = 561,438,027,066,900.56
  5. Step 5: Solve for x
    x = 561,438,027,066,900.56/28,380,665.60
  6. Step 6: Final answer
    x = 19,782,412.26

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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.