Home / 13,580.57-20,270.97-12,628.72

Finding the Fourth Proportional to 13,580.57, 20,270.97 and 12,628.72

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Solution

The fourth proportional to 13,580.57, 20,270.97 and 12,628.72 is: 18,850.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,580.57 : 20,270.97 = 12,628.72 : x
  2. Step 2: Convert to fraction form
    13,580.57/20,270.97 = 12,628.72/x
  3. Step 3: Cross multiply
    13,580.57x = 20,270.97 × 12,628.72
  4. Step 4: Simplify right side
    13,580.57x = 255,996,239.76
  5. Step 5: Solve for x
    x = 255,996,239.76/13,580.57
  6. Step 6: Final answer
    x = 18,850.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.