Home / 20,383.25-28,123.53-11,767.32

Finding the Fourth Proportional to 20,383.25, 28,123.53 and 11,767.32

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Solution

The fourth proportional to 20,383.25, 28,123.53 and 11,767.32 is: 16,235.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,383.25 : 28,123.53 = 11,767.32 : x
  2. Step 2: Convert to fraction form
    20,383.25/28,123.53 = 11,767.32/x
  3. Step 3: Cross multiply
    20,383.25x = 28,123.53 × 11,767.32
  4. Step 4: Simplify right side
    20,383.25x = 330,938,599.10
  5. Step 5: Solve for x
    x = 330,938,599.10/20,383.25
  6. Step 6: Final answer
    x = 16,235.82

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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.