Home / 20,736,027.40-31,104,041.10-18,972,430.60

Finding the Fourth Proportional to 20,736,027.40, 31,104,041.10 and 18,972,430.60

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Solution

The fourth proportional to 20,736,027.40, 31,104,041.10 and 18,972,430.60 is: 28,458,645.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,736,027.40 : 31,104,041.10 = 18,972,430.60 : x
  2. Step 2: Convert to fraction form
    20,736,027.40/31,104,041.10 = 18,972,430.60/x
  3. Step 3: Cross multiply
    20,736,027.40x = 31,104,041.10 × 18,972,430.60
  4. Step 4: Simplify right side
    20,736,027.40x = 590,119,261,149,297.75
  5. Step 5: Solve for x
    x = 590,119,261,149,297.75/20,736,027.40
  6. Step 6: Final answer
    x = 28,458,645.90

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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.