Home / 27,636.68-38,108.50-18,668.61

Finding the Fourth Proportional to 27,636.68, 38,108.50 and 18,668.61

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Solution

The fourth proportional to 27,636.68, 38,108.50 and 18,668.61 is: 25,742.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,636.68 : 38,108.50 = 18,668.61 : x
  2. Step 2: Convert to fraction form
    27,636.68/38,108.50 = 18,668.61/x
  3. Step 3: Cross multiply
    27,636.68x = 38,108.50 × 18,668.61
  4. Step 4: Simplify right side
    27,636.68x = 711,432,677.51
  5. Step 5: Solve for x
    x = 711,432,677.51/27,636.68
  6. Step 6: Final answer
    x = 25,742.34

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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.