Home / 13,228.98-18,249.68-7,922.76

Finding the Fourth Proportional to 13,228.98, 18,249.68 and 7,922.76

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Solution

The fourth proportional to 13,228.98, 18,249.68 and 7,922.76 is: 10,929.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,228.98 : 18,249.68 = 7,922.76 : x
  2. Step 2: Convert to fraction form
    13,228.98/18,249.68 = 7,922.76/x
  3. Step 3: Cross multiply
    13,228.98x = 18,249.68 × 7,922.76
  4. Step 4: Simplify right side
    13,228.98x = 144,587,834.72
  5. Step 5: Solve for x
    x = 144,587,834.72/13,228.98
  6. Step 6: Final answer
    x = 10,929.63

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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.