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Finding the Fourth Proportional to 31,360, 43,276.74 and 17,212.54

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Solution

The fourth proportional to 31,360, 43,276.74 and 17,212.54 is: 23,753.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,360 : 43,276.74 = 17,212.54 : x
  2. Step 2: Convert to fraction form
    31,360/43,276.74 = 17,212.54/x
  3. Step 3: Cross multiply
    31,360x = 43,276.74 × 17,212.54
  4. Step 4: Simplify right side
    31,360x = 744,902,618.32
  5. Step 5: Solve for x
    x = 744,902,618.32/31,360
  6. Step 6: Final answer
    x = 23,753.27

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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.