Home / 15,112.91-20,849.85-8,738.34

Finding the Fourth Proportional to 15,112.91, 20,849.85 and 8,738.34

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Solution

The fourth proportional to 15,112.91, 20,849.85 and 8,738.34 is: 12,055.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,112.91 : 20,849.85 = 8,738.34 : x
  2. Step 2: Convert to fraction form
    15,112.91/20,849.85 = 8,738.34/x
  3. Step 3: Cross multiply
    15,112.91x = 20,849.85 × 8,738.34
  4. Step 4: Simplify right side
    15,112.91x = 182,193,000.06
  5. Step 5: Solve for x
    x = 182,193,000.06/15,112.91
  6. Step 6: Final answer
    x = 12,055.45

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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.