Home / 20,738.24-28,619.16-12,359.60

Finding the Fourth Proportional to 20,738.24, 28,619.16 and 12,359.60

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Solution

The fourth proportional to 20,738.24, 28,619.16 and 12,359.60 is: 17,056.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,738.24 : 28,619.16 = 12,359.60 : x
  2. Step 2: Convert to fraction form
    20,738.24/28,619.16 = 12,359.60/x
  3. Step 3: Cross multiply
    20,738.24x = 28,619.16 × 12,359.60
  4. Step 4: Simplify right side
    20,738.24x = 353,721,369.94
  5. Step 5: Solve for x
    x = 353,721,369.94/20,738.24
  6. Step 6: Final answer
    x = 17,056.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.