Home / 20,736,145.60-31,104,218.40-19,318,969.60

Finding the Fourth Proportional to 20,736,145.60, 31,104,218.40 and 19,318,969.60

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Solution

The fourth proportional to 20,736,145.60, 31,104,218.40 and 19,318,969.60 is: 28,978,454.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,736,145.60 : 31,104,218.40 = 19,318,969.60 : x
  2. Step 2: Convert to fraction form
    20,736,145.60/31,104,218.40 = 19,318,969.60/x
  3. Step 3: Cross multiply
    20,736,145.60x = 31,104,218.40 × 19,318,969.60
  4. Step 4: Simplify right side
    20,736,145.60x = 600,901,449,701,360.62
  5. Step 5: Solve for x
    x = 600,901,449,701,360.62/20,736,145.60
  6. Step 6: Final answer
    x = 28,978,454.40

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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.