Home / 13,455.54-20,180.61-8,455.68

Finding the Fourth Proportional to 13,455.54, 20,180.61 and 8,455.68

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Solution

The fourth proportional to 13,455.54, 20,180.61 and 8,455.68 is: 12,681.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,455.54 : 20,180.61 = 8,455.68 : x
  2. Step 2: Convert to fraction form
    13,455.54/20,180.61 = 8,455.68/x
  3. Step 3: Cross multiply
    13,455.54x = 20,180.61 × 8,455.68
  4. Step 4: Simplify right side
    13,455.54x = 170,640,780.36
  5. Step 5: Solve for x
    x = 170,640,780.36/13,455.54
  6. Step 6: Final answer
    x = 12,681.82

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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.