Home / 18,821.21-25,973.39-10,438.25

Finding the Fourth Proportional to 18,821.21, 25,973.39 and 10,438.25

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Solution

The fourth proportional to 18,821.21, 25,973.39 and 10,438.25 is: 14,404.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,821.21 : 25,973.39 = 10,438.25 : x
  2. Step 2: Convert to fraction form
    18,821.21/25,973.39 = 10,438.25/x
  3. Step 3: Cross multiply
    18,821.21x = 25,973.39 × 10,438.25
  4. Step 4: Simplify right side
    18,821.21x = 271,116,634.40
  5. Step 5: Solve for x
    x = 271,116,634.40/18,821.21
  6. Step 6: Final answer
    x = 14,404.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.