Home / 18,139,361.78-25,032,319.26-9,990,599.78

Finding the Fourth Proportional to 18,139,361.78, 25,032,319.26 and 9,990,599.78

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Solution

The fourth proportional to 18,139,361.78, 25,032,319.26 and 9,990,599.78 is: 13,787,027.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,139,361.78 : 25,032,319.26 = 9,990,599.78 : x
  2. Step 2: Convert to fraction form
    18,139,361.78/25,032,319.26 = 9,990,599.78/x
  3. Step 3: Cross multiply
    18,139,361.78x = 25,032,319.26 × 9,990,599.78
  4. Step 4: Simplify right side
    18,139,361.78x = 250,087,883,291,845.75
  5. Step 5: Solve for x
    x = 250,087,883,291,845.75/18,139,361.78
  6. Step 6: Final answer
    x = 13,787,027.70

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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.