Home / 13,670.45-20,505.67-7,822.92

Finding the Fourth Proportional to 13,670.45, 20,505.67 and 7,822.92

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Solution

The fourth proportional to 13,670.45, 20,505.67 and 7,822.92 is: 11,734.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,670.45 : 20,505.67 = 7,822.92 : x
  2. Step 2: Convert to fraction form
    13,670.45/20,505.67 = 7,822.92/x
  3. Step 3: Cross multiply
    13,670.45x = 20,505.67 × 7,822.92
  4. Step 4: Simplify right side
    13,670.45x = 160,414,176.84
  5. Step 5: Solve for x
    x = 160,414,176.84/13,670.45
  6. Step 6: Final answer
    x = 11,734.38

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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.