Home / 13,729.92-20,594.88-3,870.24

Finding the Fourth Proportional to 13,729.92, 20,594.88 and 3,870.24

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Solution

The fourth proportional to 13,729.92, 20,594.88 and 3,870.24 is: 5,805.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,729.92 : 20,594.88 = 3,870.24 : x
  2. Step 2: Convert to fraction form
    13,729.92/20,594.88 = 3,870.24/x
  3. Step 3: Cross multiply
    13,729.92x = 20,594.88 × 3,870.24
  4. Step 4: Simplify right side
    13,729.92x = 79,707,128.37
  5. Step 5: Solve for x
    x = 79,707,128.37/13,729.92
  6. Step 6: Final answer
    x = 5,805.36

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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.