Home / 20,913.94-28,861.23-11,482.48

Finding the Fourth Proportional to 20,913.94, 28,861.23 and 11,482.48

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Solution

The fourth proportional to 20,913.94, 28,861.23 and 11,482.48 is: 15,845.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,913.94 : 28,861.23 = 11,482.48 : x
  2. Step 2: Convert to fraction form
    20,913.94/28,861.23 = 11,482.48/x
  3. Step 3: Cross multiply
    20,913.94x = 28,861.23 × 11,482.48
  4. Step 4: Simplify right side
    20,913.94x = 331,398,496.25
  5. Step 5: Solve for x
    x = 331,398,496.25/20,913.94
  6. Step 6: Final answer
    x = 15,845.82

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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.