Home / 20,968.71-28,936.65-11,895.81

Finding the Fourth Proportional to 20,968.71, 28,936.65 and 11,895.81

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Solution

The fourth proportional to 20,968.71, 28,936.65 and 11,895.81 is: 16,416.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,968.71 : 28,936.65 = 11,895.81 : x
  2. Step 2: Convert to fraction form
    20,968.71/28,936.65 = 11,895.81/x
  3. Step 3: Cross multiply
    20,968.71x = 28,936.65 × 11,895.81
  4. Step 4: Simplify right side
    20,968.71x = 344,224,890.44
  5. Step 5: Solve for x
    x = 344,224,890.44/20,968.71
  6. Step 6: Final answer
    x = 16,416.12

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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.