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Finding the Fourth Proportional to 31,490.62, 43,459.02 and 17,343.46

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Solution

The fourth proportional to 31,490.62, 43,459.02 and 17,343.46 is: 23,935.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,490.62 : 43,459.02 = 17,343.46 : x
  2. Step 2: Convert to fraction form
    31,490.62/43,459.02 = 17,343.46/x
  3. Step 3: Cross multiply
    31,490.62x = 43,459.02 × 17,343.46
  4. Step 4: Simplify right side
    31,490.62x = 753,729,471.00
  5. Step 5: Solve for x
    x = 753,729,471.00/31,490.62
  6. Step 6: Final answer
    x = 23,935.05

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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.