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Finding the Fourth Proportional to 31,640.64, 43,665.02 and 17,301.32

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Solution

The fourth proportional to 31,640.64, 43,665.02 and 17,301.32 is: 23,876.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,640.64 : 43,665.02 = 17,301.32 : x
  2. Step 2: Convert to fraction form
    31,640.64/43,665.02 = 17,301.32/x
  3. Step 3: Cross multiply
    31,640.64x = 43,665.02 × 17,301.32
  4. Step 4: Simplify right side
    31,640.64x = 755,462,483.83
  5. Step 5: Solve for x
    x = 755,462,483.83/31,640.64
  6. Step 6: Final answer
    x = 23,876.33

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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.