Home / 13,363.72-20,039.65-7,122.56

Finding the Fourth Proportional to 13,363.72, 20,039.65 and 7,122.56

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Solution

The fourth proportional to 13,363.72, 20,039.65 and 7,122.56 is: 10,680.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,363.72 : 20,039.65 = 7,122.56 : x
  2. Step 2: Convert to fraction form
    13,363.72/20,039.65 = 7,122.56/x
  3. Step 3: Cross multiply
    13,363.72x = 20,039.65 × 7,122.56
  4. Step 4: Simplify right side
    13,363.72x = 142,733,573.89
  5. Step 5: Solve for x
    x = 142,733,573.89/13,363.72
  6. Step 6: Final answer
    x = 10,680.68

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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.