Home / 28,379.07-39,162.64-15,633.46

Finding the Fourth Proportional to 28,379.07, 39,162.64 and 15,633.46

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Solution

The fourth proportional to 28,379.07, 39,162.64 and 15,633.46 is: 21,573.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,379.07 : 39,162.64 = 15,633.46 : x
  2. Step 2: Convert to fraction form
    28,379.07/39,162.64 = 15,633.46/x
  3. Step 3: Cross multiply
    28,379.07x = 39,162.64 × 15,633.46
  4. Step 4: Simplify right side
    28,379.07x = 612,247,565.93
  5. Step 5: Solve for x
    x = 612,247,565.93/28,379.07
  6. Step 6: Final answer
    x = 21,573.91

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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.