Home / 13,451.20-18,563.10-7,401.68

Finding the Fourth Proportional to 13,451.20, 18,563.10 and 7,401.68

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Solution

The fourth proportional to 13,451.20, 18,563.10 and 7,401.68 is: 10,214.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,451.20 : 18,563.10 = 7,401.68 : x
  2. Step 2: Convert to fraction form
    13,451.20/18,563.10 = 7,401.68/x
  3. Step 3: Cross multiply
    13,451.20x = 18,563.10 × 7,401.68
  4. Step 4: Simplify right side
    13,451.20x = 137,398,126.01
  5. Step 5: Solve for x
    x = 137,398,126.01/13,451.20
  6. Step 6: Final answer
    x = 10,214.56

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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.