Home / 13,618.16-18,793.55-7,649.70

Finding the Fourth Proportional to 13,618.16, 18,793.55 and 7,649.70

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Solution

The fourth proportional to 13,618.16, 18,793.55 and 7,649.70 is: 10,556.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,618.16 : 18,793.55 = 7,649.70 : x
  2. Step 2: Convert to fraction form
    13,618.16/18,793.55 = 7,649.70/x
  3. Step 3: Cross multiply
    13,618.16x = 18,793.55 × 7,649.70
  4. Step 4: Simplify right side
    13,618.16x = 143,765,019.44
  5. Step 5: Solve for x
    x = 143,765,019.44/13,618.16
  6. Step 6: Final answer
    x = 10,556.86

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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.