Home / 13,965.95-20,920.82-6,458.94

Finding the Fourth Proportional to 13,965.95, 20,920.82 and 6,458.94

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Solution

The fourth proportional to 13,965.95, 20,920.82 and 6,458.94 is: 9,675.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,965.95 : 20,920.82 = 6,458.94 : x
  2. Step 2: Convert to fraction form
    13,965.95/20,920.82 = 6,458.94/x
  3. Step 3: Cross multiply
    13,965.95x = 20,920.82 × 6,458.94
  4. Step 4: Simplify right side
    13,965.95x = 135,126,288.84
  5. Step 5: Solve for x
    x = 135,126,288.84/13,965.95
  6. Step 6: Final answer
    x = 9,675.41

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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.