Home / 20,632.79-28,480.02-12,134.54

Finding the Fourth Proportional to 20,632.79, 28,480.02 and 12,134.54

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Solution

The fourth proportional to 20,632.79, 28,480.02 and 12,134.54 is: 16,749.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,632.79 : 28,480.02 = 12,134.54 : x
  2. Step 2: Convert to fraction form
    20,632.79/28,480.02 = 12,134.54/x
  3. Step 3: Cross multiply
    20,632.79x = 28,480.02 × 12,134.54
  4. Step 4: Simplify right side
    20,632.79x = 345,591,799.49
  5. Step 5: Solve for x
    x = 345,591,799.49/20,632.79
  6. Step 6: Final answer
    x = 16,749.64

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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.