Home / 20,650.50-28,497.69-11,219.27

Finding the Fourth Proportional to 20,650.50, 28,497.69 and 11,219.27

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Solution

The fourth proportional to 20,650.50, 28,497.69 and 11,219.27 is: 15,482.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,650.50 : 28,497.69 = 11,219.27 : x
  2. Step 2: Convert to fraction form
    20,650.50/28,497.69 = 11,219.27/x
  3. Step 3: Cross multiply
    20,650.50x = 28,497.69 × 11,219.27
  4. Step 4: Simplify right side
    20,650.50x = 319,723,136.00
  5. Step 5: Solve for x
    x = 319,723,136.00/20,650.50
  6. Step 6: Final answer
    x = 15,482.59

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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.