Home / 27,661.50-38,172.87-15,086.34

Finding the Fourth Proportional to 27,661.50, 38,172.87 and 15,086.34

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Solution

The fourth proportional to 27,661.50, 38,172.87 and 15,086.34 is: 20,819.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,661.50 : 38,172.87 = 15,086.34 : x
  2. Step 2: Convert to fraction form
    27,661.50/38,172.87 = 15,086.34/x
  3. Step 3: Cross multiply
    27,661.50x = 38,172.87 × 15,086.34
  4. Step 4: Simplify right side
    27,661.50x = 575,888,895.60
  5. Step 5: Solve for x
    x = 575,888,895.60/27,661.50
  6. Step 6: Final answer
    x = 20,819.15

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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.