Home / 20,568.02-28,383.92-11,136.58

Finding the Fourth Proportional to 20,568.02, 28,383.92 and 11,136.58

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Solution

The fourth proportional to 20,568.02, 28,383.92 and 11,136.58 is: 15,368.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,568.02 : 28,383.92 = 11,136.58 : x
  2. Step 2: Convert to fraction form
    20,568.02/28,383.92 = 11,136.58/x
  3. Step 3: Cross multiply
    20,568.02x = 28,383.92 × 11,136.58
  4. Step 4: Simplify right side
    20,568.02x = 316,099,795.79
  5. Step 5: Solve for x
    x = 316,099,795.79/20,568.02
  6. Step 6: Final answer
    x = 15,368.51

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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.