Home / 20,960.43-28,929.50-12,013.93

Finding the Fourth Proportional to 20,960.43, 28,929.50 and 12,013.93

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Solution

The fourth proportional to 20,960.43, 28,929.50 and 12,013.93 is: 16,581.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,960.43 : 28,929.50 = 12,013.93 : x
  2. Step 2: Convert to fraction form
    20,960.43/28,929.50 = 12,013.93/x
  3. Step 3: Cross multiply
    20,960.43x = 28,929.50 × 12,013.93
  4. Step 4: Simplify right side
    20,960.43x = 347,556,783.22
  5. Step 5: Solve for x
    x = 347,556,783.22/20,960.43
  6. Step 6: Final answer
    x = 16,581.57

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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.