Home / 15,003,765.96-20,705,082.58-8,128,198.84

Finding the Fourth Proportional to 15,003,765.96, 20,705,082.58 and 8,128,198.84

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Solution

The fourth proportional to 15,003,765.96, 20,705,082.58 and 8,128,198.84 is: 11,216,852.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,003,765.96 : 20,705,082.58 = 8,128,198.84 : x
  2. Step 2: Convert to fraction form
    15,003,765.96/20,705,082.58 = 8,128,198.84/x
  3. Step 3: Cross multiply
    15,003,765.96x = 20,705,082.58 × 8,128,198.84
  4. Step 4: Simplify right side
    15,003,765.96x = 168,295,028,208,860.19
  5. Step 5: Solve for x
    x = 168,295,028,208,860.19/15,003,765.96
  6. Step 6: Final answer
    x = 11,216,852.40

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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.