Home / 12,213,608.40-18,320,412.60-7,422,766.20

Finding the Fourth Proportional to 12,213,608.40, 18,320,412.60 and 7,422,766.20

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Solution

The fourth proportional to 12,213,608.40, 18,320,412.60 and 7,422,766.20 is: 11,134,149.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,213,608.40 : 18,320,412.60 = 7,422,766.20 : x
  2. Step 2: Convert to fraction form
    12,213,608.40/18,320,412.60 = 7,422,766.20/x
  3. Step 3: Cross multiply
    12,213,608.40x = 18,320,412.60 × 7,422,766.20
  4. Step 4: Simplify right side
    12,213,608.40x = 135,988,139,417,334.14
  5. Step 5: Solve for x
    x = 135,988,139,417,334.14/12,213,608.40
  6. Step 6: Final answer
    x = 11,134,149.30

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1.5x scale

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.