Home / 13,682.88-20,507.28-6,657.12

Finding the Fourth Proportional to 13,682.88, 20,507.28 and 6,657.12

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Solution

The fourth proportional to 13,682.88, 20,507.28 and 6,657.12 is: 9,977.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,682.88 : 20,507.28 = 6,657.12 : x
  2. Step 2: Convert to fraction form
    13,682.88/20,507.28 = 6,657.12/x
  3. Step 3: Cross multiply
    13,682.88x = 20,507.28 × 6,657.12
  4. Step 4: Simplify right side
    13,682.88x = 136,519,423.83
  5. Step 5: Solve for x
    x = 136,519,423.83/13,682.88
  6. Step 6: Final answer
    x = 9,977.39

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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.