Home / 13,778.37-20,662.70-6,381.45

Finding the Fourth Proportional to 13,778.37, 20,662.70 and 6,381.45

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Solution

The fourth proportional to 13,778.37, 20,662.70 and 6,381.45 is: 9,569.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,778.37 : 20,662.70 = 6,381.45 : x
  2. Step 2: Convert to fraction form
    13,778.37/20,662.70 = 6,381.45/x
  3. Step 3: Cross multiply
    13,778.37x = 20,662.70 × 6,381.45
  4. Step 4: Simplify right side
    13,778.37x = 131,857,955.01
  5. Step 5: Solve for x
    x = 131,857,955.01/13,778.37
  6. Step 6: Final answer
    x = 9,569.92

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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.