Home / 13,887.88-20,832.10-6,490.35

Finding the Fourth Proportional to 13,887.88, 20,832.10 and 6,490.35

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Solution

The fourth proportional to 13,887.88, 20,832.10 and 6,490.35 is: 9,735.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,887.88 : 20,832.10 = 6,490.35 : x
  2. Step 2: Convert to fraction form
    13,887.88/20,832.10 = 6,490.35/x
  3. Step 3: Cross multiply
    13,887.88x = 20,832.10 × 6,490.35
  4. Step 4: Simplify right side
    13,887.88x = 135,207,604.01
  5. Step 5: Solve for x
    x = 135,207,604.01/13,887.88
  6. Step 6: Final answer
    x = 9,735.66

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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.