Home / 25,660.20-38,420.78-13,322.28

Finding the Fourth Proportional to 25,660.20, 38,420.78 and 13,322.28

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Solution

The fourth proportional to 25,660.20, 38,420.78 and 13,322.28 is: 19,947.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,660.20 : 38,420.78 = 13,322.28 : x
  2. Step 2: Convert to fraction form
    25,660.20/38,420.78 = 13,322.28/x
  3. Step 3: Cross multiply
    25,660.20x = 38,420.78 × 13,322.28
  4. Step 4: Simplify right side
    25,660.20x = 511,852,388.98
  5. Step 5: Solve for x
    x = 511,852,388.98/25,660.20
  6. Step 6: Final answer
    x = 19,947.33

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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.