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Finding the Fourth Proportional to 20,347.25, 30,659.52 and 16,730.50

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Solution

The fourth proportional to 20,347.25, 30,659.52 and 16,730.50 is: 25,209.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,347.25 : 30,659.52 = 16,730.50 : x
  2. Step 2: Convert to fraction form
    20,347.25/30,659.52 = 16,730.50/x
  3. Step 3: Cross multiply
    20,347.25x = 30,659.52 × 16,730.50
  4. Step 4: Simplify right side
    20,347.25x = 512,949,099.36
  5. Step 5: Solve for x
    x = 512,949,099.36/20,347.25
  6. Step 6: Final answer
    x = 25,209.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.