Home / 12,668.04-17,470.53-8,187.09

Finding the Fourth Proportional to 12,668.04, 17,470.53 and 8,187.09

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Solution

The fourth proportional to 12,668.04, 17,470.53 and 8,187.09 is: 11,290.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,668.04 : 17,470.53 = 8,187.09 : x
  2. Step 2: Convert to fraction form
    12,668.04/17,470.53 = 8,187.09/x
  3. Step 3: Cross multiply
    12,668.04x = 17,470.53 × 8,187.09
  4. Step 4: Simplify right side
    12,668.04x = 143,032,801.46
  5. Step 5: Solve for x
    x = 143,032,801.46/12,668.04
  6. Step 6: Final answer
    x = 11,290.84

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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.