Home / 18,820,507.82-28,232,111.09-7,879,687.67

Finding the Fourth Proportional to 18,820,507.82, 28,232,111.09 and 7,879,687.67

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Solution

The fourth proportional to 18,820,507.82, 28,232,111.09 and 7,879,687.67 is: 11,820,096.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,820,507.82 : 28,232,111.09 = 7,879,687.67 : x
  2. Step 2: Convert to fraction form
    18,820,507.82/28,232,111.09 = 7,879,687.67/x
  3. Step 3: Cross multiply
    18,820,507.82x = 28,232,111.09 × 7,879,687.67
  4. Step 4: Simplify right side
    18,820,507.82x = 222,460,217,685,125.12
  5. Step 5: Solve for x
    x = 222,460,217,685,125.12/18,820,507.82
  6. Step 6: Final answer
    x = 11,820,096.45

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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.