Home / 13,599.54-20,406.60-12,608.10

Finding the Fourth Proportional to 13,599.54, 20,406.60 and 12,608.10

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Solution

The fourth proportional to 13,599.54, 20,406.60 and 12,608.10 is: 18,918.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,599.54 : 20,406.60 = 12,608.10 : x
  2. Step 2: Convert to fraction form
    13,599.54/20,406.60 = 12,608.10/x
  3. Step 3: Cross multiply
    13,599.54x = 20,406.60 × 12,608.10
  4. Step 4: Simplify right side
    13,599.54x = 257,288,453.46
  5. Step 5: Solve for x
    x = 257,288,453.46/13,599.54
  6. Step 6: Final answer
    x = 18,918.91

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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.