Home / 21,822.21-30,132.41-17,789.67

Finding the Fourth Proportional to 21,822.21, 30,132.41 and 17,789.67

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Solution

The fourth proportional to 21,822.21, 30,132.41 and 17,789.67 is: 24,564.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,822.21 : 30,132.41 = 17,789.67 : x
  2. Step 2: Convert to fraction form
    21,822.21/30,132.41 = 17,789.67/x
  3. Step 3: Cross multiply
    21,822.21x = 30,132.41 × 17,789.67
  4. Step 4: Simplify right side
    21,822.21x = 536,045,541.26
  5. Step 5: Solve for x
    x = 536,045,541.26/21,822.21
  6. Step 6: Final answer
    x = 24,564.22

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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.