Home / 12,778,989.72-17,635,091.22-6,977,811.84

Finding the Fourth Proportional to 12,778,989.72, 17,635,091.22 and 6,977,811.84

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Solution

The fourth proportional to 12,778,989.72, 17,635,091.22 and 6,977,811.84 is: 9,629,426.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,778,989.72 : 17,635,091.22 = 6,977,811.84 : x
  2. Step 2: Convert to fraction form
    12,778,989.72/17,635,091.22 = 6,977,811.84/x
  3. Step 3: Cross multiply
    12,778,989.72x = 17,635,091.22 × 6,977,811.84
  4. Step 4: Simplify right side
    12,778,989.72x = 123,054,348,314,396.03
  5. Step 5: Solve for x
    x = 123,054,348,314,396.03/12,778,989.72
  6. Step 6: Final answer
    x = 9,629,426.97

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1.5x scale

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.