Home / 20,567.52-28,383.21-11,136.08

Finding the Fourth Proportional to 20,567.52, 28,383.21 and 11,136.08

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Solution

The fourth proportional to 20,567.52, 28,383.21 and 11,136.08 is: 15,367.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,567.52 : 28,383.21 = 11,136.08 : x
  2. Step 2: Convert to fraction form
    20,567.52/28,383.21 = 11,136.08/x
  3. Step 3: Cross multiply
    20,567.52x = 28,383.21 × 11,136.08
  4. Step 4: Simplify right side
    20,567.52x = 316,077,768.17
  5. Step 5: Solve for x
    x = 316,077,768.17/20,567.52
  6. Step 6: Final answer
    x = 15,367.81

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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.