Home / 20,732.89-28,612.70-11,776.99

Finding the Fourth Proportional to 20,732.89, 28,612.70 and 11,776.99

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Solution

The fourth proportional to 20,732.89, 28,612.70 and 11,776.99 is: 16,252.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,732.89 : 28,612.70 = 11,776.99 : x
  2. Step 2: Convert to fraction form
    20,732.89/28,612.70 = 11,776.99/x
  3. Step 3: Cross multiply
    20,732.89x = 28,612.70 × 11,776.99
  4. Step 4: Simplify right side
    20,732.89x = 336,971,481.77
  5. Step 5: Solve for x
    x = 336,971,481.77/20,732.89
  6. Step 6: Final answer
    x = 16,252.99

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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.