Home / 13,621.01-20,420.37-7,049.07

Finding the Fourth Proportional to 13,621.01, 20,420.37 and 7,049.07

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Solution

The fourth proportional to 13,621.01, 20,420.37 and 7,049.07 is: 10,567.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,621.01 : 20,420.37 = 7,049.07 : x
  2. Step 2: Convert to fraction form
    13,621.01/20,420.37 = 7,049.07/x
  3. Step 3: Cross multiply
    13,621.01x = 20,420.37 × 7,049.07
  4. Step 4: Simplify right side
    13,621.01x = 143,944,617.56
  5. Step 5: Solve for x
    x = 143,944,617.56/13,621.01
  6. Step 6: Final answer
    x = 10,567.84

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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.