Home / 20,809,156.56-28,716,424.52-11,516,744.67

Finding the Fourth Proportional to 20,809,156.56, 28,716,424.52 and 11,516,744.67

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Solution

The fourth proportional to 20,809,156.56, 28,716,424.52 and 11,516,744.67 is: 15,892,990.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,809,156.56 : 28,716,424.52 = 11,516,744.67 : x
  2. Step 2: Convert to fraction form
    20,809,156.56/28,716,424.52 = 11,516,744.67/x
  3. Step 3: Cross multiply
    20,809,156.56x = 28,716,424.52 × 11,516,744.67
  4. Step 4: Simplify right side
    20,809,156.56x = 330,719,729,032,167.31
  5. Step 5: Solve for x
    x = 330,719,729,032,167.31/20,809,156.56
  6. Step 6: Final answer
    x = 15,892,990.57

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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.