Home / 30,540.74-45,767.91-12,992.90

Finding the Fourth Proportional to 30,540.74, 45,767.91 and 12,992.90

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Solution

The fourth proportional to 30,540.74, 45,767.91 and 12,992.90 is: 19,470.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,540.74 : 45,767.91 = 12,992.90 : x
  2. Step 2: Convert to fraction form
    30,540.74/45,767.91 = 12,992.90/x
  3. Step 3: Cross multiply
    30,540.74x = 45,767.91 × 12,992.90
  4. Step 4: Simplify right side
    30,540.74x = 594,657,877.84
  5. Step 5: Solve for x
    x = 594,657,877.84/30,540.74
  6. Step 6: Final answer
    x = 19,470.97

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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.