Home / 21,324.55-31,986.83-5,742.18

Finding the Fourth Proportional to 21,324.55, 31,986.83 and 5,742.18

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Solution

The fourth proportional to 21,324.55, 31,986.83 and 5,742.18 is: 8,613.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,324.55 : 31,986.83 = 5,742.18 : x
  2. Step 2: Convert to fraction form
    21,324.55/31,986.83 = 5,742.18/x
  3. Step 3: Cross multiply
    21,324.55x = 31,986.83 × 5,742.18
  4. Step 4: Simplify right side
    21,324.55x = 183,674,135.49
  5. Step 5: Solve for x
    x = 183,674,135.49/21,324.55
  6. Step 6: Final answer
    x = 8,613.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.