Home / 13,676.51-20,500.79-6,286.47

Finding the Fourth Proportional to 13,676.51, 20,500.79 and 6,286.47

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Solution

The fourth proportional to 13,676.51, 20,500.79 and 6,286.47 is: 9,423.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,676.51 : 20,500.79 = 6,286.47 : x
  2. Step 2: Convert to fraction form
    13,676.51/20,500.79 = 6,286.47/x
  3. Step 3: Cross multiply
    13,676.51x = 20,500.79 × 6,286.47
  4. Step 4: Simplify right side
    13,676.51x = 128,877,569.88
  5. Step 5: Solve for x
    x = 128,877,569.88/13,676.51
  6. Step 6: Final answer
    x = 9,423.28

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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.