Home / 13,489.08-18,615.74-7,520.73

Finding the Fourth Proportional to 13,489.08, 18,615.74 and 7,520.73

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Solution

The fourth proportional to 13,489.08, 18,615.74 and 7,520.73 is: 10,379.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,489.08 : 18,615.74 = 7,520.73 : x
  2. Step 2: Convert to fraction form
    13,489.08/18,615.74 = 7,520.73/x
  3. Step 3: Cross multiply
    13,489.08x = 18,615.74 × 7,520.73
  4. Step 4: Simplify right side
    13,489.08x = 140,003,954.29
  5. Step 5: Solve for x
    x = 140,003,954.29/13,489.08
  6. Step 6: Final answer
    x = 10,379.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.