Home / 15,034.89-20,749.69-8,661.74

Finding the Fourth Proportional to 15,034.89, 20,749.69 and 8,661.74

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Solution

The fourth proportional to 15,034.89, 20,749.69 and 8,661.74 is: 11,954.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,034.89 : 20,749.69 = 8,661.74 : x
  2. Step 2: Convert to fraction form
    15,034.89/20,749.69 = 8,661.74/x
  3. Step 3: Cross multiply
    15,034.89x = 20,749.69 × 8,661.74
  4. Step 4: Simplify right side
    15,034.89x = 179,728,351.30
  5. Step 5: Solve for x
    x = 179,728,351.30/15,034.89
  6. Step 6: Final answer
    x = 11,954.08

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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.