Home / 20,554.95-28,365.83-11,123.51

Finding the Fourth Proportional to 20,554.95, 28,365.83 and 11,123.51

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Solution

The fourth proportional to 20,554.95, 28,365.83 and 11,123.51 is: 15,350.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,554.95 : 28,365.83 = 11,123.51 : x
  2. Step 2: Convert to fraction form
    20,554.95/28,365.83 = 11,123.51/x
  3. Step 3: Cross multiply
    20,554.95x = 28,365.83 × 11,123.51
  4. Step 4: Simplify right side
    20,554.95x = 315,527,467.13
  5. Step 5: Solve for x
    x = 315,527,467.13/20,554.95
  6. Step 6: Final answer
    x = 15,350.44

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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.