Home / 18,630.18-25,709.40-10,672.20

Finding the Fourth Proportional to 18,630.18, 25,709.40 and 10,672.20

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Solution

The fourth proportional to 18,630.18, 25,709.40 and 10,672.20 is: 14,727.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,630.18 : 25,709.40 = 10,672.20 : x
  2. Step 2: Convert to fraction form
    18,630.18/25,709.40 = 10,672.20/x
  3. Step 3: Cross multiply
    18,630.18x = 25,709.40 × 10,672.20
  4. Step 4: Simplify right side
    18,630.18x = 274,375,858.68
  5. Step 5: Solve for x
    x = 274,375,858.68/18,630.18
  6. Step 6: Final answer
    x = 14,727.49

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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.