Home / 13,935-20,908.69-5,631.23

Finding the Fourth Proportional to 13,935, 20,908.69 and 5,631.23

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Solution

The fourth proportional to 13,935, 20,908.69 and 5,631.23 is: 8,449.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,935 : 20,908.69 = 5,631.23 : x
  2. Step 2: Convert to fraction form
    13,935/20,908.69 = 5,631.23/x
  3. Step 3: Cross multiply
    13,935x = 20,908.69 × 5,631.23
  4. Step 4: Simplify right side
    13,935x = 117,741,642.39
  5. Step 5: Solve for x
    x = 117,741,642.39/13,935
  6. Step 6: Final answer
    x = 8,449.35

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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.