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Finding the Fourth Proportional to 30,662.92, 45,955.90 and 13,112.11

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Solution

The fourth proportional to 30,662.92, 45,955.90 and 13,112.11 is: 19,651.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,662.92 : 45,955.90 = 13,112.11 : x
  2. Step 2: Convert to fraction form
    30,662.92/45,955.90 = 13,112.11/x
  3. Step 3: Cross multiply
    30,662.92x = 45,955.90 × 13,112.11
  4. Step 4: Simplify right side
    30,662.92x = 602,578,815.95
  5. Step 5: Solve for x
    x = 602,578,815.95/30,662.92
  6. Step 6: Final answer
    x = 19,651.71

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1.5x scale

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.