Home / 30,139.29-45,208.94-19,748.61

Finding the Fourth Proportional to 30,139.29, 45,208.94 and 19,748.61

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Solution

The fourth proportional to 30,139.29, 45,208.94 and 19,748.61 is: 29,622.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,139.29 : 45,208.94 = 19,748.61 : x
  2. Step 2: Convert to fraction form
    30,139.29/45,208.94 = 19,748.61/x
  3. Step 3: Cross multiply
    30,139.29x = 45,208.94 × 19,748.61
  4. Step 4: Simplify right side
    30,139.29x = 892,813,625.83
  5. Step 5: Solve for x
    x = 892,813,625.83/30,139.29
  6. Step 6: Final answer
    x = 29,622.92

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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.