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Finding the Fourth Proportional to 31,395, 43,325.17 and 17,054.90

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Solution

The fourth proportional to 31,395, 43,325.17 and 17,054.90 is: 23,535.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,395 : 43,325.17 = 17,054.90 : x
  2. Step 2: Convert to fraction form
    31,395/43,325.17 = 17,054.90/x
  3. Step 3: Cross multiply
    31,395x = 43,325.17 × 17,054.90
  4. Step 4: Simplify right side
    31,395x = 738,906,441.83
  5. Step 5: Solve for x
    x = 738,906,441.83/31,395
  6. Step 6: Final answer
    x = 23,535.80

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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.