Home / 20,685.61-28,546.79-11,733.49

Finding the Fourth Proportional to 20,685.61, 28,546.79 and 11,733.49

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Solution

The fourth proportional to 20,685.61, 28,546.79 and 11,733.49 is: 16,192.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,685.61 : 28,546.79 = 11,733.49 : x
  2. Step 2: Convert to fraction form
    20,685.61/28,546.79 = 11,733.49/x
  3. Step 3: Cross multiply
    20,685.61x = 28,546.79 × 11,733.49
  4. Step 4: Simplify right side
    20,685.61x = 334,953,505.54
  5. Step 5: Solve for x
    x = 334,953,505.54/20,685.61
  6. Step 6: Final answer
    x = 16,192.58

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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.