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Finding the Fourth Proportional to 31,881.02, 43,995.03 and 18,450.41

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Solution

The fourth proportional to 31,881.02, 43,995.03 and 18,450.41 is: 25,461.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,881.02 : 43,995.03 = 18,450.41 : x
  2. Step 2: Convert to fraction form
    31,881.02/43,995.03 = 18,450.41/x
  3. Step 3: Cross multiply
    31,881.02x = 43,995.03 × 18,450.41
  4. Step 4: Simplify right side
    31,881.02x = 811,726,341.46
  5. Step 5: Solve for x
    x = 811,726,341.46/31,881.02
  6. Step 6: Final answer
    x = 25,461.12

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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.