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Finding the Fourth Proportional to 18,137.66, 25,011.60 and 17,079.40

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Solution

The fourth proportional to 18,137.66, 25,011.60 and 17,079.40 is: 23,552.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,137.66 : 25,011.60 = 17,079.40 : x
  2. Step 2: Convert to fraction form
    18,137.66/25,011.60 = 17,079.40/x
  3. Step 3: Cross multiply
    18,137.66x = 25,011.60 × 17,079.40
  4. Step 4: Simplify right side
    18,137.66x = 427,183,121.04
  5. Step 5: Solve for x
    x = 427,183,121.04/18,137.66
  6. Step 6: Final answer
    x = 23,552.27

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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.