Home / 19,877.25-27,430.50-11,379.33

Finding the Fourth Proportional to 19,877.25, 27,430.50 and 11,379.33

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Solution

The fourth proportional to 19,877.25, 27,430.50 and 11,379.33 is: 15,703.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,877.25 : 27,430.50 = 11,379.33 : x
  2. Step 2: Convert to fraction form
    19,877.25/27,430.50 = 11,379.33/x
  3. Step 3: Cross multiply
    19,877.25x = 27,430.50 × 11,379.33
  4. Step 4: Simplify right side
    19,877.25x = 312,140,711.57
  5. Step 5: Solve for x
    x = 312,140,711.57/19,877.25
  6. Step 6: Final answer
    x = 15,703.42

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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.