Home / 25,989.30-38,976.78-10,991.34

Finding the Fourth Proportional to 25,989.30, 38,976.78 and 10,991.34

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Solution

The fourth proportional to 25,989.30, 38,976.78 and 10,991.34 is: 16,483.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,989.30 : 38,976.78 = 10,991.34 : x
  2. Step 2: Convert to fraction form
    25,989.30/38,976.78 = 10,991.34/x
  3. Step 3: Cross multiply
    25,989.30x = 38,976.78 × 10,991.34
  4. Step 4: Simplify right side
    25,989.30x = 428,407,041.09
  5. Step 5: Solve for x
    x = 428,407,041.09/25,989.30
  6. Step 6: Final answer
    x = 16,483.98

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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.