Home / 20,796.17-28,698.68-11,364.72

Finding the Fourth Proportional to 20,796.17, 28,698.68 and 11,364.72

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Solution

The fourth proportional to 20,796.17, 28,698.68 and 11,364.72 is: 15,683.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,796.17 : 28,698.68 = 11,364.72 : x
  2. Step 2: Convert to fraction form
    20,796.17/28,698.68 = 11,364.72/x
  3. Step 3: Cross multiply
    20,796.17x = 28,698.68 × 11,364.72
  4. Step 4: Simplify right side
    20,796.17x = 326,152,405.75
  5. Step 5: Solve for x
    x = 326,152,405.75/20,796.17
  6. Step 6: Final answer
    x = 15,683.30

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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.