Home / 13,478.54-20,231.91-6,464.48

Finding the Fourth Proportional to 13,478.54, 20,231.91 and 6,464.48

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Solution

The fourth proportional to 13,478.54, 20,231.91 and 6,464.48 is: 9,703.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,478.54 : 20,231.91 = 6,464.48 : x
  2. Step 2: Convert to fraction form
    13,478.54/20,231.91 = 6,464.48/x
  3. Step 3: Cross multiply
    13,478.54x = 20,231.91 × 6,464.48
  4. Step 4: Simplify right side
    13,478.54x = 130,788,676.40
  5. Step 5: Solve for x
    x = 130,788,676.40/13,478.54
  6. Step 6: Final answer
    x = 9,703.48

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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.