Home / 13,610.34-20,418.84-5,290.92

Finding the Fourth Proportional to 13,610.34, 20,418.84 and 5,290.92

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Solution

The fourth proportional to 13,610.34, 20,418.84 and 5,290.92 is: 7,937.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,610.34 : 20,418.84 = 5,290.92 : x
  2. Step 2: Convert to fraction form
    13,610.34/20,418.84 = 5,290.92/x
  3. Step 3: Cross multiply
    13,610.34x = 20,418.84 × 5,290.92
  4. Step 4: Simplify right side
    13,610.34x = 108,034,448.93
  5. Step 5: Solve for x
    x = 108,034,448.93/13,610.34
  6. Step 6: Final answer
    x = 7,937.67

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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.