Home / 20,577.11-30,859.56-8,730.72

Finding the Fourth Proportional to 20,577.11, 30,859.56 and 8,730.72

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Solution

The fourth proportional to 20,577.11, 30,859.56 and 8,730.72 is: 13,093.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,577.11 : 30,859.56 = 8,730.72 : x
  2. Step 2: Convert to fraction form
    20,577.11/30,859.56 = 8,730.72/x
  3. Step 3: Cross multiply
    20,577.11x = 30,859.56 × 8,730.72
  4. Step 4: Simplify right side
    20,577.11x = 269,426,177.68
  5. Step 5: Solve for x
    x = 269,426,177.68/20,577.11
  6. Step 6: Final answer
    x = 13,093.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.