Home / 20,636.06-28,479.53-11,685.14

Finding the Fourth Proportional to 20,636.06, 28,479.53 and 11,685.14

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Solution

The fourth proportional to 20,636.06, 28,479.53 and 11,685.14 is: 16,126.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,636.06 : 28,479.53 = 11,685.14 : x
  2. Step 2: Convert to fraction form
    20,636.06/28,479.53 = 11,685.14/x
  3. Step 3: Cross multiply
    20,636.06x = 28,479.53 × 11,685.14
  4. Step 4: Simplify right side
    20,636.06x = 332,787,236.76
  5. Step 5: Solve for x
    x = 332,787,236.76/20,636.06
  6. Step 6: Final answer
    x = 16,126.49

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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.