Home / 20,567.84-28,383.70-11,136.38

Finding the Fourth Proportional to 20,567.84, 28,383.70 and 11,136.38

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Solution

The fourth proportional to 20,567.84, 28,383.70 and 11,136.38 is: 15,368.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,567.84 : 28,383.70 = 11,136.38 : x
  2. Step 2: Convert to fraction form
    20,567.84/28,383.70 = 11,136.38/x
  3. Step 3: Cross multiply
    20,567.84x = 28,383.70 × 11,136.38
  4. Step 4: Simplify right side
    20,567.84x = 316,091,669.01
  5. Step 5: Solve for x
    x = 316,091,669.01/20,567.84
  6. Step 6: Final answer
    x = 15,368.25

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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.