Home / 20,756.64-28,645.18-11,684.82

Finding the Fourth Proportional to 20,756.64, 28,645.18 and 11,684.82

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Solution

The fourth proportional to 20,756.64, 28,645.18 and 11,684.82 is: 16,125.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,756.64 : 28,645.18 = 11,684.82 : x
  2. Step 2: Convert to fraction form
    20,756.64/28,645.18 = 11,684.82/x
  3. Step 3: Cross multiply
    20,756.64x = 28,645.18 × 11,684.82
  4. Step 4: Simplify right side
    20,756.64x = 334,713,772.17
  5. Step 5: Solve for x
    x = 334,713,772.17/20,756.64
  6. Step 6: Final answer
    x = 16,125.62

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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.