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Finding the Fourth Proportional to 33,318.06, 45,978.09 and 19,178.70

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Solution

The fourth proportional to 33,318.06, 45,978.09 and 19,178.70 is: 26,466.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,318.06 : 45,978.09 = 19,178.70 : x
  2. Step 2: Convert to fraction form
    33,318.06/45,978.09 = 19,178.70/x
  3. Step 3: Cross multiply
    33,318.06x = 45,978.09 × 19,178.70
  4. Step 4: Simplify right side
    33,318.06x = 881,799,994.68
  5. Step 5: Solve for x
    x = 881,799,994.68/33,318.06
  6. Step 6: Final answer
    x = 26,466.13

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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.