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Finding the Fourth Proportional to 13,810.33, 20,609.33 and 13,731.45

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Solution

The fourth proportional to 13,810.33, 20,609.33 and 13,731.45 is: 20,491.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,810.33 : 20,609.33 = 13,731.45 : x
  2. Step 2: Convert to fraction form
    13,810.33/20,609.33 = 13,731.45/x
  3. Step 3: Cross multiply
    13,810.33x = 20,609.33 × 13,731.45
  4. Step 4: Simplify right side
    13,810.33x = 282,995,984.43
  5. Step 5: Solve for x
    x = 282,995,984.43/13,810.33
  6. Step 6: Final answer
    x = 20,491.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.