Home / 13,345.85-20,014.92-3,985.49

Finding the Fourth Proportional to 13,345.85, 20,014.92 and 3,985.49

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Solution

The fourth proportional to 13,345.85, 20,014.92 and 3,985.49 is: 5,977.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,345.85 : 20,014.92 = 3,985.49 : x
  2. Step 2: Convert to fraction form
    13,345.85/20,014.92 = 3,985.49/x
  3. Step 3: Cross multiply
    13,345.85x = 20,014.92 × 3,985.49
  4. Step 4: Simplify right side
    13,345.85x = 79,769,163.44
  5. Step 5: Solve for x
    x = 79,769,163.44/13,345.85
  6. Step 6: Final answer
    x = 5,977.08

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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.