Home / 13,621.77-20,438.06-5,304.29

Finding the Fourth Proportional to 13,621.77, 20,438.06 and 5,304.29

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Solution

The fourth proportional to 13,621.77, 20,438.06 and 5,304.29 is: 7,958.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,621.77 : 20,438.06 = 5,304.29 : x
  2. Step 2: Convert to fraction form
    13,621.77/20,438.06 = 5,304.29/x
  3. Step 3: Cross multiply
    13,621.77x = 20,438.06 × 5,304.29
  4. Step 4: Simplify right side
    13,621.77x = 108,409,268.57
  5. Step 5: Solve for x
    x = 108,409,268.57/13,621.77
  6. Step 6: Final answer
    x = 7,958.53

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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.