Home / 19,123.80-28,661.27-15,427.77

Finding the Fourth Proportional to 19,123.80, 28,661.27 and 15,427.77

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Solution

The fourth proportional to 19,123.80, 28,661.27 and 15,427.77 is: 23,121.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,123.80 : 28,661.27 = 15,427.77 : x
  2. Step 2: Convert to fraction form
    19,123.80/28,661.27 = 15,427.77/x
  3. Step 3: Cross multiply
    19,123.80x = 28,661.27 × 15,427.77
  4. Step 4: Simplify right side
    19,123.80x = 442,179,404.33
  5. Step 5: Solve for x
    x = 442,179,404.33/19,123.80
  6. Step 6: Final answer
    x = 23,121.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.