Home / 13,425.12-20,116.98-7,185.96

Finding the Fourth Proportional to 13,425.12, 20,116.98 and 7,185.96

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Solution

The fourth proportional to 13,425.12, 20,116.98 and 7,185.96 is: 10,767.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,425.12 : 20,116.98 = 7,185.96 : x
  2. Step 2: Convert to fraction form
    13,425.12/20,116.98 = 7,185.96/x
  3. Step 3: Cross multiply
    13,425.12x = 20,116.98 × 7,185.96
  4. Step 4: Simplify right side
    13,425.12x = 144,559,813.60
  5. Step 5: Solve for x
    x = 144,559,813.60/13,425.12
  6. Step 6: Final answer
    x = 10,767.86

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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.