Home / 20,405,539.27-28,160,916.74-11,238,179.59

Finding the Fourth Proportional to 20,405,539.27, 28,160,916.74 and 11,238,179.59

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Solution

The fourth proportional to 20,405,539.27, 28,160,916.74 and 11,238,179.59 is: 15,509,388.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,405,539.27 : 28,160,916.74 = 11,238,179.59 : x
  2. Step 2: Convert to fraction form
    20,405,539.27/28,160,916.74 = 11,238,179.59/x
  3. Step 3: Cross multiply
    20,405,539.27x = 28,160,916.74 × 11,238,179.59
  4. Step 4: Simplify right side
    20,405,539.27x = 316,477,439,743,157.31
  5. Step 5: Solve for x
    x = 316,477,439,743,157.31/20,405,539.27
  6. Step 6: Final answer
    x = 15,509,388.68

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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.