Home / 20,683.46-28,540.68-11,730.53

Finding the Fourth Proportional to 20,683.46, 28,540.68 and 11,730.53

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Solution

The fourth proportional to 20,683.46, 28,540.68 and 11,730.53 is: 16,186.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,683.46 : 28,540.68 = 11,730.53 : x
  2. Step 2: Convert to fraction form
    20,683.46/28,540.68 = 11,730.53/x
  3. Step 3: Cross multiply
    20,683.46x = 28,540.68 × 11,730.53
  4. Step 4: Simplify right side
    20,683.46x = 334,797,302.96
  5. Step 5: Solve for x
    x = 334,797,302.96/20,683.46
  6. Step 6: Final answer
    x = 16,186.72

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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.