Home / 25,985.28-38,982-11,198.40

Finding the Fourth Proportional to 25,985.28, 38,982 and 11,198.40

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Solution

The fourth proportional to 25,985.28, 38,982 and 11,198.40 is: 16,799.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,985.28 : 38,982 = 11,198.40 : x
  2. Step 2: Convert to fraction form
    25,985.28/38,982 = 11,198.40/x
  3. Step 3: Cross multiply
    25,985.28x = 38,982 × 11,198.40
  4. Step 4: Simplify right side
    25,985.28x = 436,536,028.80
  5. Step 5: Solve for x
    x = 436,536,028.80/25,985.28
  6. Step 6: Final answer
    x = 16,799.36

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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.