Home / 20,480.94-28,263.76-11,528.58

Finding the Fourth Proportional to 20,480.94, 28,263.76 and 11,528.58

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Solution

The fourth proportional to 20,480.94, 28,263.76 and 11,528.58 is: 15,909.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,480.94 : 28,263.76 = 11,528.58 : x
  2. Step 2: Convert to fraction form
    20,480.94/28,263.76 = 11,528.58/x
  3. Step 3: Cross multiply
    20,480.94x = 28,263.76 × 11,528.58
  4. Step 4: Simplify right side
    20,480.94x = 325,840,989.44
  5. Step 5: Solve for x
    x = 325,840,989.44/20,480.94
  6. Step 6: Final answer
    x = 15,909.47

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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.