Home / 21,324.44-31,988.28-5,742.20

Finding the Fourth Proportional to 21,324.44, 31,988.28 and 5,742.20

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Solution

The fourth proportional to 21,324.44, 31,988.28 and 5,742.20 is: 8,613.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,324.44 : 31,988.28 = 5,742.20 : x
  2. Step 2: Convert to fraction form
    21,324.44/31,988.28 = 5,742.20/x
  3. Step 3: Cross multiply
    21,324.44x = 31,988.28 × 5,742.20
  4. Step 4: Simplify right side
    21,324.44x = 183,683,101.42
  5. Step 5: Solve for x
    x = 183,683,101.42/21,324.44
  6. Step 6: Final answer
    x = 8,613.74

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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.