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Finding the Fourth Proportional to 16,976.20, 23,435.20 and 11,320.40

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Solution

The fourth proportional to 16,976.20, 23,435.20 and 11,320.40 is: 15,627.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,976.20 : 23,435.20 = 11,320.40 : x
  2. Step 2: Convert to fraction form
    16,976.20/23,435.20 = 11,320.40/x
  3. Step 3: Cross multiply
    16,976.20x = 23,435.20 × 11,320.40
  4. Step 4: Simplify right side
    16,976.20x = 265,295,838.08
  5. Step 5: Solve for x
    x = 265,295,838.08/16,976.20
  6. Step 6: Final answer
    x = 15,627.52

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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.