Home / 20,731,447.30-28,609,202.01-11,439,101.38

Finding the Fourth Proportional to 20,731,447.30, 28,609,202.01 and 11,439,101.38

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Solution

The fourth proportional to 20,731,447.30, 28,609,202.01 and 11,439,101.38 is: 15,785,852.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,731,447.30 : 28,609,202.01 = 11,439,101.38 : x
  2. Step 2: Convert to fraction form
    20,731,447.30/28,609,202.01 = 11,439,101.38/x
  3. Step 3: Cross multiply
    20,731,447.30x = 28,609,202.01 × 11,439,101.38
  4. Step 4: Simplify right side
    20,731,447.30x = 327,263,562,193,289.81
  5. Step 5: Solve for x
    x = 327,263,562,193,289.81/20,731,447.30
  6. Step 6: Final answer
    x = 15,785,852.16

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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.