Home / 15,887.36-21,924.96-8,813.90

Finding the Fourth Proportional to 15,887.36, 21,924.96 and 8,813.90

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Solution

The fourth proportional to 15,887.36, 21,924.96 and 8,813.90 is: 12,163.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,887.36 : 21,924.96 = 8,813.90 : x
  2. Step 2: Convert to fraction form
    15,887.36/21,924.96 = 8,813.90/x
  3. Step 3: Cross multiply
    15,887.36x = 21,924.96 × 8,813.90
  4. Step 4: Simplify right side
    15,887.36x = 193,244,404.94
  5. Step 5: Solve for x
    x = 193,244,404.94/15,887.36
  6. Step 6: Final answer
    x = 12,163.41

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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.