Home / 20,649.77-28,494.72-11,695.55

Finding the Fourth Proportional to 20,649.77, 28,494.72 and 11,695.55

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Solution

The fourth proportional to 20,649.77, 28,494.72 and 11,695.55 is: 16,138.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,649.77 : 28,494.72 = 11,695.55 : x
  2. Step 2: Convert to fraction form
    20,649.77/28,494.72 = 11,695.55/x
  3. Step 3: Cross multiply
    20,649.77x = 28,494.72 × 11,695.55
  4. Step 4: Simplify right side
    20,649.77x = 333,261,422.50
  5. Step 5: Solve for x
    x = 333,261,422.50/20,649.77
  6. Step 6: Final answer
    x = 16,138.75

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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.