Home / 20,518.31-30,777.47-4,935.94

Finding the Fourth Proportional to 20,518.31, 30,777.47 and 4,935.94

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Solution

The fourth proportional to 20,518.31, 30,777.47 and 4,935.94 is: 7,403.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,518.31 : 30,777.47 = 4,935.94 : x
  2. Step 2: Convert to fraction form
    20,518.31/30,777.47 = 4,935.94/x
  3. Step 3: Cross multiply
    20,518.31x = 30,777.47 × 4,935.94
  4. Step 4: Simplify right side
    20,518.31x = 151,915,662.16
  5. Step 5: Solve for x
    x = 151,915,662.16/20,518.31
  6. Step 6: Final answer
    x = 7,403.91

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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.