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Finding the Fourth Proportional to 21,742.62, 32,762.03 and 17,880.39

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Solution

The fourth proportional to 21,742.62, 32,762.03 and 17,880.39 is: 26,942.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,742.62 : 32,762.03 = 17,880.39 : x
  2. Step 2: Convert to fraction form
    21,742.62/32,762.03 = 17,880.39/x
  3. Step 3: Cross multiply
    21,742.62x = 32,762.03 × 17,880.39
  4. Step 4: Simplify right side
    21,742.62x = 585,797,873.59
  5. Step 5: Solve for x
    x = 585,797,873.59/21,742.62
  6. Step 6: Final answer
    x = 26,942.38

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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.