Home / 28,606.38-39,453.50-20,136.62

Finding the Fourth Proportional to 28,606.38, 39,453.50 and 20,136.62

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Solution

The fourth proportional to 28,606.38, 39,453.50 and 20,136.62 is: 27,772.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,606.38 : 39,453.50 = 20,136.62 : x
  2. Step 2: Convert to fraction form
    28,606.38/39,453.50 = 20,136.62/x
  3. Step 3: Cross multiply
    28,606.38x = 39,453.50 × 20,136.62
  4. Step 4: Simplify right side
    28,606.38x = 794,459,839.22
  5. Step 5: Solve for x
    x = 794,459,839.22/28,606.38
  6. Step 6: Final answer
    x = 27,772.12

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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.