Home / 25,439.21-38,120.07-12,940.50

Finding the Fourth Proportional to 25,439.21, 38,120.07 and 12,940.50

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Solution

The fourth proportional to 25,439.21, 38,120.07 and 12,940.50 is: 19,391.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,439.21 : 38,120.07 = 12,940.50 : x
  2. Step 2: Convert to fraction form
    25,439.21/38,120.07 = 12,940.50/x
  3. Step 3: Cross multiply
    25,439.21x = 38,120.07 × 12,940.50
  4. Step 4: Simplify right side
    25,439.21x = 493,292,765.84
  5. Step 5: Solve for x
    x = 493,292,765.84/25,439.21
  6. Step 6: Final answer
    x = 19,391.04

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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.