Home / 13,815.27-19,062.93-7,764.33

Finding the Fourth Proportional to 13,815.27, 19,062.93 and 7,764.33

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Solution

The fourth proportional to 13,815.27, 19,062.93 and 7,764.33 is: 10,713.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,815.27 : 19,062.93 = 7,764.33 : x
  2. Step 2: Convert to fraction form
    13,815.27/19,062.93 = 7,764.33/x
  3. Step 3: Cross multiply
    13,815.27x = 19,062.93 × 7,764.33
  4. Step 4: Simplify right side
    13,815.27x = 148,010,879.29
  5. Step 5: Solve for x
    x = 148,010,879.29/13,815.27
  6. Step 6: Final answer
    x = 10,713.57

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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.