Home / 30,620.19-45,941.76-20,851.59

Finding the Fourth Proportional to 30,620.19, 45,941.76 and 20,851.59

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Solution

The fourth proportional to 30,620.19, 45,941.76 and 20,851.59 is: 31,285.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,620.19 : 45,941.76 = 20,851.59 : x
  2. Step 2: Convert to fraction form
    30,620.19/45,941.76 = 20,851.59/x
  3. Step 3: Cross multiply
    30,620.19x = 45,941.76 × 20,851.59
  4. Step 4: Simplify right side
    30,620.19x = 957,958,743.40
  5. Step 5: Solve for x
    x = 957,958,743.40/30,620.19
  6. Step 6: Final answer
    x = 31,285.20

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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.