Home / 11,328.31-16,992.51-5,405.68

Finding the Fourth Proportional to 11,328.31, 16,992.51 and 5,405.68

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Solution

The fourth proportional to 11,328.31, 16,992.51 and 5,405.68 is: 8,108.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,328.31 : 16,992.51 = 5,405.68 : x
  2. Step 2: Convert to fraction form
    11,328.31/16,992.51 = 5,405.68/x
  3. Step 3: Cross multiply
    11,328.31x = 16,992.51 × 5,405.68
  4. Step 4: Simplify right side
    11,328.31x = 91,856,071.46
  5. Step 5: Solve for x
    x = 91,856,071.46/11,328.31
  6. Step 6: Final answer
    x = 8,108.54

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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.