Home / 20,405,541.52-28,160,919.84-11,238,181.84

Finding the Fourth Proportional to 20,405,541.52, 28,160,919.84 and 11,238,181.84

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Solution

The fourth proportional to 20,405,541.52, 28,160,919.84 and 11,238,181.84 is: 15,509,391.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,405,541.52 : 28,160,919.84 = 11,238,181.84 : x
  2. Step 2: Convert to fraction form
    20,405,541.52/28,160,919.84 = 11,238,181.84/x
  3. Step 3: Cross multiply
    20,405,541.52x = 28,160,919.84 × 11,238,181.84
  4. Step 4: Simplify right side
    20,405,541.52x = 316,477,537,943,583.69
  5. Step 5: Solve for x
    x = 316,477,537,943,583.69/20,405,541.52
  6. Step 6: Final answer
    x = 15,509,391.78

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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.