Home / 13,358.37-18,518.85-12,647.37

Finding the Fourth Proportional to 13,358.37, 18,518.85 and 12,647.37

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Solution

The fourth proportional to 13,358.37, 18,518.85 and 12,647.37 is: 17,533.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,358.37 : 18,518.85 = 12,647.37 : x
  2. Step 2: Convert to fraction form
    13,358.37/18,518.85 = 12,647.37/x
  3. Step 3: Cross multiply
    13,358.37x = 18,518.85 × 12,647.37
  4. Step 4: Simplify right side
    13,358.37x = 234,214,696.69
  5. Step 5: Solve for x
    x = 234,214,696.69/13,358.37
  6. Step 6: Final answer
    x = 17,533.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.