Home / 20,546.49-28,353.88-11,471.99

Finding the Fourth Proportional to 20,546.49, 28,353.88 and 11,471.99

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Solution

The fourth proportional to 20,546.49, 28,353.88 and 11,471.99 is: 15,831.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,546.49 : 28,353.88 = 11,471.99 : x
  2. Step 2: Convert to fraction form
    20,546.49/28,353.88 = 11,471.99/x
  3. Step 3: Cross multiply
    20,546.49x = 28,353.88 × 11,471.99
  4. Step 4: Simplify right side
    20,546.49x = 325,275,561.04
  5. Step 5: Solve for x
    x = 325,275,561.04/20,546.49
  6. Step 6: Final answer
    x = 15,831.20

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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.