Home / 13,115.58-19,676.88-5,720.64

Finding the Fourth Proportional to 13,115.58, 19,676.88 and 5,720.64

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Solution

The fourth proportional to 13,115.58, 19,676.88 and 5,720.64 is: 8,582.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,115.58 : 19,676.88 = 5,720.64 : x
  2. Step 2: Convert to fraction form
    13,115.58/19,676.88 = 5,720.64/x
  3. Step 3: Cross multiply
    13,115.58x = 19,676.88 × 5,720.64
  4. Step 4: Simplify right side
    13,115.58x = 112,564,346.80
  5. Step 5: Solve for x
    x = 112,564,346.80/13,115.58
  6. Step 6: Final answer
    x = 8,582.49

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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.