Home / 12,638.63-18,957.92-5,243.27

Finding the Fourth Proportional to 12,638.63, 18,957.92 and 5,243.27

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Solution

The fourth proportional to 12,638.63, 18,957.92 and 5,243.27 is: 7,864.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,638.63 : 18,957.92 = 5,243.27 : x
  2. Step 2: Convert to fraction form
    12,638.63/18,957.92 = 5,243.27/x
  3. Step 3: Cross multiply
    12,638.63x = 18,957.92 × 5,243.27
  4. Step 4: Simplify right side
    12,638.63x = 99,401,372.19
  5. Step 5: Solve for x
    x = 99,401,372.19/12,638.63
  6. Step 6: Final answer
    x = 7,864.88

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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.