Home / 20,658.84-28,509.12-11,227.56

Finding the Fourth Proportional to 20,658.84, 28,509.12 and 11,227.56

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Solution

The fourth proportional to 20,658.84, 28,509.12 and 11,227.56 is: 15,493.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,658.84 : 28,509.12 = 11,227.56 : x
  2. Step 2: Convert to fraction form
    20,658.84/28,509.12 = 11,227.56/x
  3. Step 3: Cross multiply
    20,658.84x = 28,509.12 × 11,227.56
  4. Step 4: Simplify right side
    20,658.84x = 320,087,855.35
  5. Step 5: Solve for x
    x = 320,087,855.35/20,658.84
  6. Step 6: Final answer
    x = 15,493.99

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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.