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Finding the Fourth Proportional to 30,661.00, 45,991.46 and 12,895.00

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Solution

The fourth proportional to 30,661.00, 45,991.46 and 12,895.00 is: 19,342.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,661.00 : 45,991.46 = 12,895.00 : x
  2. Step 2: Convert to fraction form
    30,661.00/45,991.46 = 12,895.00/x
  3. Step 3: Cross multiply
    30,661.00x = 45,991.46 × 12,895.00
  4. Step 4: Simplify right side
    30,661.00x = 593,059,793.96
  5. Step 5: Solve for x
    x = 593,059,793.96/30,661.00
  6. Step 6: Final answer
    x = 19,342.48

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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.