Home / 20,958.42-28,923.06-11,398.80

Finding the Fourth Proportional to 20,958.42, 28,923.06 and 11,398.80

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Solution

The fourth proportional to 20,958.42, 28,923.06 and 11,398.80 is: 15,730.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,958.42 : 28,923.06 = 11,398.80 : x
  2. Step 2: Convert to fraction form
    20,958.42/28,923.06 = 11,398.80/x
  3. Step 3: Cross multiply
    20,958.42x = 28,923.06 × 11,398.80
  4. Step 4: Simplify right side
    20,958.42x = 329,688,176.33
  5. Step 5: Solve for x
    x = 329,688,176.33/20,958.42
  6. Step 6: Final answer
    x = 15,730.58

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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.