Home / 20,632.44-28,472.60-11,200.80

Finding the Fourth Proportional to 20,632.44, 28,472.60 and 11,200.80

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Solution

The fourth proportional to 20,632.44, 28,472.60 and 11,200.80 is: 15,457.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,632.44 : 28,472.60 = 11,200.80 : x
  2. Step 2: Convert to fraction form
    20,632.44/28,472.60 = 11,200.80/x
  3. Step 3: Cross multiply
    20,632.44x = 28,472.60 × 11,200.80
  4. Step 4: Simplify right side
    20,632.44x = 318,915,898.08
  5. Step 5: Solve for x
    x = 318,915,898.08/20,632.44
  6. Step 6: Final answer
    x = 15,457.01

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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.