Home / 13,402.83-20,072.46-10,620.55

Finding the Fourth Proportional to 13,402.83, 20,072.46 and 10,620.55

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Solution

The fourth proportional to 13,402.83, 20,072.46 and 10,620.55 is: 15,905.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,402.83 : 20,072.46 = 10,620.55 : x
  2. Step 2: Convert to fraction form
    13,402.83/20,072.46 = 10,620.55/x
  3. Step 3: Cross multiply
    13,402.83x = 20,072.46 × 10,620.55
  4. Step 4: Simplify right side
    13,402.83x = 213,180,570.23
  5. Step 5: Solve for x
    x = 213,180,570.23/13,402.83
  6. Step 6: Final answer
    x = 15,905.64

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1.5x scale

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.