Home / 20,282.22-27,989.55-11,328.21

Finding the Fourth Proportional to 20,282.22, 27,989.55 and 11,328.21

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Solution

The fourth proportional to 20,282.22, 27,989.55 and 11,328.21 is: 15,632.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,282.22 : 27,989.55 = 11,328.21 : x
  2. Step 2: Convert to fraction form
    20,282.22/27,989.55 = 11,328.21/x
  3. Step 3: Cross multiply
    20,282.22x = 27,989.55 × 11,328.21
  4. Step 4: Simplify right side
    20,282.22x = 317,071,500.21
  5. Step 5: Solve for x
    x = 317,071,500.21/20,282.22
  6. Step 6: Final answer
    x = 15,632.98

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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.