Home / 13,665.56-20,487.41-6,274.87

Finding the Fourth Proportional to 13,665.56, 20,487.41 and 6,274.87

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Solution

The fourth proportional to 13,665.56, 20,487.41 and 6,274.87 is: 9,407.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,665.56 : 20,487.41 = 6,274.87 : x
  2. Step 2: Convert to fraction form
    13,665.56/20,487.41 = 6,274.87/x
  3. Step 3: Cross multiply
    13,665.56x = 20,487.41 × 6,274.87
  4. Step 4: Simplify right side
    13,665.56x = 128,555,757.68
  5. Step 5: Solve for x
    x = 128,555,757.68/13,665.56
  6. Step 6: Final answer
    x = 9,407.28

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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.