Home / 25,451.40-38,145.67-18,455.43

Finding the Fourth Proportional to 25,451.40, 38,145.67 and 18,455.43

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Solution

The fourth proportional to 25,451.40, 38,145.67 and 18,455.43 is: 27,660.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,451.40 : 38,145.67 = 18,455.43 : x
  2. Step 2: Convert to fraction form
    25,451.40/38,145.67 = 18,455.43/x
  3. Step 3: Cross multiply
    25,451.40x = 38,145.67 × 18,455.43
  4. Step 4: Simplify right side
    25,451.40x = 703,994,742.49
  5. Step 5: Solve for x
    x = 703,994,742.49/25,451.40
  6. Step 6: Final answer
    x = 27,660.35

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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.