Home / 28,731.76-39,650.32-15,985.96

Finding the Fourth Proportional to 28,731.76, 39,650.32 and 15,985.96

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Solution

The fourth proportional to 28,731.76, 39,650.32 and 15,985.96 is: 22,060.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,731.76 : 39,650.32 = 15,985.96 : x
  2. Step 2: Convert to fraction form
    28,731.76/39,650.32 = 15,985.96/x
  3. Step 3: Cross multiply
    28,731.76x = 39,650.32 × 15,985.96
  4. Step 4: Simplify right side
    28,731.76x = 633,848,429.51
  5. Step 5: Solve for x
    x = 633,848,429.51/28,731.76
  6. Step 6: Final answer
    x = 22,060.90

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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.