Home / 20,567.88-28,383.57-11,136.42

Finding the Fourth Proportional to 20,567.88, 28,383.57 and 11,136.42

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Solution

The fourth proportional to 20,567.88, 28,383.57 and 11,136.42 is: 15,368.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,567.88 : 28,383.57 = 11,136.42 : x
  2. Step 2: Convert to fraction form
    20,567.88/28,383.57 = 11,136.42/x
  3. Step 3: Cross multiply
    20,567.88x = 28,383.57 × 11,136.42
  4. Step 4: Simplify right side
    20,567.88x = 316,091,356.62
  5. Step 5: Solve for x
    x = 316,091,356.62/20,567.88
  6. Step 6: Final answer
    x = 15,368.20

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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.