Home / 20,369.43-30,512.57-10,487.97

Finding the Fourth Proportional to 20,369.43, 30,512.57 and 10,487.97

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Solution

The fourth proportional to 20,369.43, 30,512.57 and 10,487.97 is: 15,710.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,369.43 : 30,512.57 = 10,487.97 : x
  2. Step 2: Convert to fraction form
    20,369.43/30,512.57 = 10,487.97/x
  3. Step 3: Cross multiply
    20,369.43x = 30,512.57 × 10,487.97
  4. Step 4: Simplify right side
    20,369.43x = 320,014,866.34
  5. Step 5: Solve for x
    x = 320,014,866.34/20,369.43
  6. Step 6: Final answer
    x = 15,710.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.