Home / 13,581.81-18,744.66-8,276.49

Finding the Fourth Proportional to 13,581.81, 18,744.66 and 8,276.49

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Solution

The fourth proportional to 13,581.81, 18,744.66 and 8,276.49 is: 11,422.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,581.81 : 18,744.66 = 8,276.49 : x
  2. Step 2: Convert to fraction form
    13,581.81/18,744.66 = 8,276.49/x
  3. Step 3: Cross multiply
    13,581.81x = 18,744.66 × 8,276.49
  4. Step 4: Simplify right side
    13,581.81x = 155,139,991.04
  5. Step 5: Solve for x
    x = 155,139,991.04/13,581.81
  6. Step 6: Final answer
    x = 11,422.63

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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.