Home / 30,071.69-45,072.17-12,291.38

Finding the Fourth Proportional to 30,071.69, 45,072.17 and 12,291.38

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Solution

The fourth proportional to 30,071.69, 45,072.17 and 12,291.38 is: 18,422.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,071.69 : 45,072.17 = 12,291.38 : x
  2. Step 2: Convert to fraction form
    30,071.69/45,072.17 = 12,291.38/x
  3. Step 3: Cross multiply
    30,071.69x = 45,072.17 × 12,291.38
  4. Step 4: Simplify right side
    30,071.69x = 553,999,107.44
  5. Step 5: Solve for x
    x = 553,999,107.44/30,071.69
  6. Step 6: Final answer
    x = 18,422.61

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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.