Home / 20,679.84-28,543.23-11,732.58

Finding the Fourth Proportional to 20,679.84, 28,543.23 and 11,732.58

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Solution

The fourth proportional to 20,679.84, 28,543.23 and 11,732.58 is: 16,193.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,679.84 : 28,543.23 = 11,732.58 : x
  2. Step 2: Convert to fraction form
    20,679.84/28,543.23 = 11,732.58/x
  3. Step 3: Cross multiply
    20,679.84x = 28,543.23 × 11,732.58
  4. Step 4: Simplify right side
    20,679.84x = 334,885,729.43
  5. Step 5: Solve for x
    x = 334,885,729.43/20,679.84
  6. Step 6: Final answer
    x = 16,193.83

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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.