Home / 13,928.12-20,868.72-6,898.76

Finding the Fourth Proportional to 13,928.12, 20,868.72 and 6,898.76

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Solution

The fourth proportional to 13,928.12, 20,868.72 and 6,898.76 is: 10,336.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,928.12 : 20,868.72 = 6,898.76 : x
  2. Step 2: Convert to fraction form
    13,928.12/20,868.72 = 6,898.76/x
  3. Step 3: Cross multiply
    13,928.12x = 20,868.72 × 6,898.76
  4. Step 4: Simplify right side
    13,928.12x = 143,968,290.79
  5. Step 5: Solve for x
    x = 143,968,290.79/13,928.12
  6. Step 6: Final answer
    x = 10,336.52

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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.