Home / 13,455.12-18,576.18-8,426.82

Finding the Fourth Proportional to 13,455.12, 18,576.18 and 8,426.82

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Solution

The fourth proportional to 13,455.12, 18,576.18 and 8,426.82 is: 11,634.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,455.12 : 18,576.18 = 8,426.82 : x
  2. Step 2: Convert to fraction form
    13,455.12/18,576.18 = 8,426.82/x
  3. Step 3: Cross multiply
    13,455.12x = 18,576.18 × 8,426.82
  4. Step 4: Simplify right side
    13,455.12x = 156,538,125.15
  5. Step 5: Solve for x
    x = 156,538,125.15/13,455.12
  6. Step 6: Final answer
    x = 11,634.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.