Home / 20,513.50-30,609.24-19,259.62

Finding the Fourth Proportional to 20,513.50, 30,609.24 and 19,259.62

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Solution

The fourth proportional to 20,513.50, 30,609.24 and 19,259.62 is: 28,738.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,513.50 : 30,609.24 = 19,259.62 : x
  2. Step 2: Convert to fraction form
    20,513.50/30,609.24 = 19,259.62/x
  3. Step 3: Cross multiply
    20,513.50x = 30,609.24 × 19,259.62
  4. Step 4: Simplify right side
    20,513.50x = 589,522,330.89
  5. Step 5: Solve for x
    x = 589,522,330.89/20,513.50
  6. Step 6: Final answer
    x = 28,738.26

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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.