Home / 20,859.69-28,785.90-11,299.20

Finding the Fourth Proportional to 20,859.69, 28,785.90 and 11,299.20

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Solution

The fourth proportional to 20,859.69, 28,785.90 and 11,299.20 is: 15,592.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,859.69 : 28,785.90 = 11,299.20 : x
  2. Step 2: Convert to fraction form
    20,859.69/28,785.90 = 11,299.20/x
  3. Step 3: Cross multiply
    20,859.69x = 28,785.90 × 11,299.20
  4. Step 4: Simplify right side
    20,859.69x = 325,257,641.28
  5. Step 5: Solve for x
    x = 325,257,641.28/20,859.69
  6. Step 6: Final answer
    x = 15,592.64

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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.