Home / 20,821,563.28-28,729,673.94-13,082,121.46

Finding the Fourth Proportional to 20,821,563.28, 28,729,673.94 and 13,082,121.46

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Solution

The fourth proportional to 20,821,563.28, 28,729,673.94 and 13,082,121.46 is: 18,050,762.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,821,563.28 : 28,729,673.94 = 13,082,121.46 : x
  2. Step 2: Convert to fraction form
    20,821,563.28/28,729,673.94 = 13,082,121.46/x
  3. Step 3: Cross multiply
    20,821,563.28x = 28,729,673.94 × 13,082,121.46
  4. Step 4: Simplify right side
    20,821,563.28x = 375,845,083,989,276.81
  5. Step 5: Solve for x
    x = 375,845,083,989,276.81/20,821,563.28
  6. Step 6: Final answer
    x = 18,050,762.04

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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.