Home / 28,379.32-39,157.98-15,804.04

Finding the Fourth Proportional to 28,379.32, 39,157.98 and 15,804.04

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Solution

The fourth proportional to 28,379.32, 39,157.98 and 15,804.04 is: 21,806.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,379.32 : 39,157.98 = 15,804.04 : x
  2. Step 2: Convert to fraction form
    28,379.32/39,157.98 = 15,804.04/x
  3. Step 3: Cross multiply
    28,379.32x = 39,157.98 × 15,804.04
  4. Step 4: Simplify right side
    28,379.32x = 618,854,282.24
  5. Step 5: Solve for x
    x = 618,854,282.24/28,379.32
  6. Step 6: Final answer
    x = 21,806.52

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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.