Home / 13,668.42-18,861.84-7,699.98

Finding the Fourth Proportional to 13,668.42, 18,861.84 and 7,699.98

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Solution

The fourth proportional to 13,668.42, 18,861.84 and 7,699.98 is: 10,625.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,668.42 : 18,861.84 = 7,699.98 : x
  2. Step 2: Convert to fraction form
    13,668.42/18,861.84 = 7,699.98/x
  3. Step 3: Cross multiply
    13,668.42x = 18,861.84 × 7,699.98
  4. Step 4: Simplify right side
    13,668.42x = 145,235,790.76
  5. Step 5: Solve for x
    x = 145,235,790.76/13,668.42
  6. Step 6: Final answer
    x = 10,625.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.