Home / 25,321.09-34,942.90-13,990.55

Finding the Fourth Proportional to 25,321.09, 34,942.90 and 13,990.55

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Solution

The fourth proportional to 25,321.09, 34,942.90 and 13,990.55 is: 19,306.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,321.09 : 34,942.90 = 13,990.55 : x
  2. Step 2: Convert to fraction form
    25,321.09/34,942.90 = 13,990.55/x
  3. Step 3: Cross multiply
    25,321.09x = 34,942.90 × 13,990.55
  4. Step 4: Simplify right side
    25,321.09x = 488,870,319.64
  5. Step 5: Solve for x
    x = 488,870,319.64/25,321.09
  6. Step 6: Final answer
    x = 19,306.84

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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.