Home / 27,636.18-38,107.80-18,668.11

Finding the Fourth Proportional to 27,636.18, 38,107.80 and 18,668.11

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Solution

The fourth proportional to 27,636.18, 38,107.80 and 18,668.11 is: 25,741.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,636.18 : 38,107.80 = 18,668.11 : x
  2. Step 2: Convert to fraction form
    27,636.18/38,107.80 = 18,668.11/x
  3. Step 3: Cross multiply
    27,636.18x = 38,107.80 × 18,668.11
  4. Step 4: Simplify right side
    27,636.18x = 711,400,602.26
  5. Step 5: Solve for x
    x = 711,400,602.26/27,636.18
  6. Step 6: Final answer
    x = 25,741.64

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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.