Home / 18,328.05-25,278.86-12,672.27

Finding the Fourth Proportional to 18,328.05, 25,278.86 and 12,672.27

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Solution

The fourth proportional to 18,328.05, 25,278.86 and 12,672.27 is: 17,478.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,328.05 : 25,278.86 = 12,672.27 : x
  2. Step 2: Convert to fraction form
    18,328.05/25,278.86 = 12,672.27/x
  3. Step 3: Cross multiply
    18,328.05x = 25,278.86 × 12,672.27
  4. Step 4: Simplify right side
    18,328.05x = 320,340,475.85
  5. Step 5: Solve for x
    x = 320,340,475.85/18,328.05
  6. Step 6: Final answer
    x = 17,478.15

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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.