Home / 25,628.81-38,443.21-8,100

Finding the Fourth Proportional to 25,628.81, 38,443.21 and 8,100

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Solution

The fourth proportional to 25,628.81, 38,443.21 and 8,100 is: 12,150

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,628.81 : 38,443.21 = 8,100 : x
  2. Step 2: Convert to fraction form
    25,628.81/38,443.21 = 8,100/x
  3. Step 3: Cross multiply
    25,628.81x = 38,443.21 × 8,100
  4. Step 4: Simplify right side
    25,628.81x = 311,389,980.75
  5. Step 5: Solve for x
    x = 311,389,980.75/25,628.81
  6. Step 6: Final answer
    x = 12,150

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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.