Home / 20,859.08-28,787.59-11,907.93

Finding the Fourth Proportional to 20,859.08, 28,787.59 and 11,907.93

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Solution

The fourth proportional to 20,859.08, 28,787.59 and 11,907.93 is: 16,434.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,859.08 : 28,787.59 = 11,907.93 : x
  2. Step 2: Convert to fraction form
    20,859.08/28,787.59 = 11,907.93/x
  3. Step 3: Cross multiply
    20,859.08x = 28,787.59 × 11,907.93
  4. Step 4: Simplify right side
    20,859.08x = 342,800,500.51
  5. Step 5: Solve for x
    x = 342,800,500.51/20,859.08
  6. Step 6: Final answer
    x = 16,434.12

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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.