Home / 20,765.42-28,656.28-11,814.66

Finding the Fourth Proportional to 20,765.42, 28,656.28 and 11,814.66

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Solution

The fourth proportional to 20,765.42, 28,656.28 and 11,814.66 is: 16,304.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,765.42 : 28,656.28 = 11,814.66 : x
  2. Step 2: Convert to fraction form
    20,765.42/28,656.28 = 11,814.66/x
  3. Step 3: Cross multiply
    20,765.42x = 28,656.28 × 11,814.66
  4. Step 4: Simplify right side
    20,765.42x = 338,564,205.06
  5. Step 5: Solve for x
    x = 338,564,205.06/20,765.42
  6. Step 6: Final answer
    x = 16,304.23

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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.