Home / 25,949.13-38,923.71-8,420.31

Finding the Fourth Proportional to 25,949.13, 38,923.71 and 8,420.31

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Solution

The fourth proportional to 25,949.13, 38,923.71 and 8,420.31 is: 12,630.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,949.13 : 38,923.71 = 8,420.31 : x
  2. Step 2: Convert to fraction form
    25,949.13/38,923.71 = 8,420.31/x
  3. Step 3: Cross multiply
    25,949.13x = 38,923.71 × 8,420.31
  4. Step 4: Simplify right side
    25,949.13x = 327,749,704.55
  5. Step 5: Solve for x
    x = 327,749,704.55/25,949.13
  6. Step 6: Final answer
    x = 12,630.47

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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.