Home / 13,378.74-18,457.91-7,997.43

Finding the Fourth Proportional to 13,378.74, 18,457.91 and 7,997.43

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Solution

The fourth proportional to 13,378.74, 18,457.91 and 7,997.43 is: 11,033.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,378.74 : 18,457.91 = 7,997.43 : x
  2. Step 2: Convert to fraction form
    13,378.74/18,457.91 = 7,997.43/x
  3. Step 3: Cross multiply
    13,378.74x = 18,457.91 × 7,997.43
  4. Step 4: Simplify right side
    13,378.74x = 147,615,849.33
  5. Step 5: Solve for x
    x = 147,615,849.33/13,378.74
  6. Step 6: Final answer
    x = 11,033.62

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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.