Home / 11,920.30-16,525.33-11,288.36

Finding the Fourth Proportional to 11,920.30, 16,525.33 and 11,288.36

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Solution

The fourth proportional to 11,920.30, 16,525.33 and 11,288.36 is: 15,649.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,920.30 : 16,525.33 = 11,288.36 : x
  2. Step 2: Convert to fraction form
    11,920.30/16,525.33 = 11,288.36/x
  3. Step 3: Cross multiply
    11,920.30x = 16,525.33 × 11,288.36
  4. Step 4: Simplify right side
    11,920.30x = 186,543,887.25
  5. Step 5: Solve for x
    x = 186,543,887.25/11,920.30
  6. Step 6: Final answer
    x = 15,649.26

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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.