Home / 13,949.88-20,924.82-5,187

Finding the Fourth Proportional to 13,949.88, 20,924.82 and 5,187

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Solution

The fourth proportional to 13,949.88, 20,924.82 and 5,187 is: 7,780.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,949.88 : 20,924.82 = 5,187 : x
  2. Step 2: Convert to fraction form
    13,949.88/20,924.82 = 5,187/x
  3. Step 3: Cross multiply
    13,949.88x = 20,924.82 × 5,187
  4. Step 4: Simplify right side
    13,949.88x = 108,537,041.34
  5. Step 5: Solve for x
    x = 108,537,041.34/13,949.88
  6. Step 6: Final answer
    x = 7,780.50

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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.