Home / 20,864.34-28,792.17-11,911.59

Finding the Fourth Proportional to 20,864.34, 28,792.17 and 11,911.59

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Solution

The fourth proportional to 20,864.34, 28,792.17 and 11,911.59 is: 16,437.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,864.34 : 28,792.17 = 11,911.59 : x
  2. Step 2: Convert to fraction form
    20,864.34/28,792.17 = 11,911.59/x
  3. Step 3: Cross multiply
    20,864.34x = 28,792.17 × 11,911.59
  4. Step 4: Simplify right side
    20,864.34x = 342,960,524.25
  5. Step 5: Solve for x
    x = 342,960,524.25/20,864.34
  6. Step 6: Final answer
    x = 16,437.64

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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.