Home / 30,479.97-45,721.74-11,760.11

Finding the Fourth Proportional to 30,479.97, 45,721.74 and 11,760.11

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Solution

The fourth proportional to 30,479.97, 45,721.74 and 11,760.11 is: 17,640.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,479.97 : 45,721.74 = 11,760.11 : x
  2. Step 2: Convert to fraction form
    30,479.97/45,721.74 = 11,760.11/x
  3. Step 3: Cross multiply
    30,479.97x = 45,721.74 × 11,760.11
  4. Step 4: Simplify right side
    30,479.97x = 537,692,678.74
  5. Step 5: Solve for x
    x = 537,692,678.74/30,479.97
  6. Step 6: Final answer
    x = 17,640.85

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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.