Home / 30,235.94-45,359.38-12,456.72

Finding the Fourth Proportional to 30,235.94, 45,359.38 and 12,456.72

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Solution

The fourth proportional to 30,235.94, 45,359.38 and 12,456.72 is: 18,687.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,235.94 : 45,359.38 = 12,456.72 : x
  2. Step 2: Convert to fraction form
    30,235.94/45,359.38 = 12,456.72/x
  3. Step 3: Cross multiply
    30,235.94x = 45,359.38 × 12,456.72
  4. Step 4: Simplify right side
    30,235.94x = 565,028,975.91
  5. Step 5: Solve for x
    x = 565,028,975.91/30,235.94
  6. Step 6: Final answer
    x = 18,687.33

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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.