Home / 30,665.30-45,972.81-15,878.43

Finding the Fourth Proportional to 30,665.30, 45,972.81 and 15,878.43

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Solution

The fourth proportional to 30,665.30, 45,972.81 and 15,878.43 is: 23,804.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,665.30 : 45,972.81 = 15,878.43 : x
  2. Step 2: Convert to fraction form
    30,665.30/45,972.81 = 15,878.43/x
  3. Step 3: Cross multiply
    30,665.30x = 45,972.81 × 15,878.43
  4. Step 4: Simplify right side
    30,665.30x = 729,976,045.49
  5. Step 5: Solve for x
    x = 729,976,045.49/30,665.30
  6. Step 6: Final answer
    x = 23,804.63

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.