Home / 21,257.36-31,883.56-5,676.20

Finding the Fourth Proportional to 21,257.36, 31,883.56 and 5,676.20

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Solution

The fourth proportional to 21,257.36, 31,883.56 and 5,676.20 is: 8,513.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,257.36 : 31,883.56 = 5,676.20 : x
  2. Step 2: Convert to fraction form
    21,257.36/31,883.56 = 5,676.20/x
  3. Step 3: Cross multiply
    21,257.36x = 31,883.56 × 5,676.20
  4. Step 4: Simplify right side
    21,257.36x = 180,977,463.27
  5. Step 5: Solve for x
    x = 180,977,463.27/21,257.36
  6. Step 6: Final answer
    x = 8,513.64

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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.