Home / 13,830.22-19,079.68-8,791.74

Finding the Fourth Proportional to 13,830.22, 19,079.68 and 8,791.74

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Solution

The fourth proportional to 13,830.22, 19,079.68 and 8,791.74 is: 12,128.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,830.22 : 19,079.68 = 8,791.74 : x
  2. Step 2: Convert to fraction form
    13,830.22/19,079.68 = 8,791.74/x
  3. Step 3: Cross multiply
    13,830.22x = 19,079.68 × 8,791.74
  4. Step 4: Simplify right side
    13,830.22x = 167,743,585.84
  5. Step 5: Solve for x
    x = 167,743,585.84/13,830.22
  6. Step 6: Final answer
    x = 12,128.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.