Home / 20,554.92-28,365.84-11,123.58

Finding the Fourth Proportional to 20,554.92, 28,365.84 and 11,123.58

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Solution

The fourth proportional to 20,554.92, 28,365.84 and 11,123.58 is: 15,350.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,554.92 : 28,365.84 = 11,123.58 : x
  2. Step 2: Convert to fraction form
    20,554.92/28,365.84 = 11,123.58/x
  3. Step 3: Cross multiply
    20,554.92x = 28,365.84 × 11,123.58
  4. Step 4: Simplify right side
    20,554.92x = 315,529,690.51
  5. Step 5: Solve for x
    x = 315,529,690.51/20,554.92
  6. Step 6: Final answer
    x = 15,350.57

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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.