Home / 18,457.94-25,505.28-13,143.53

Finding the Fourth Proportional to 18,457.94, 25,505.28 and 13,143.53

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Solution

The fourth proportional to 18,457.94, 25,505.28 and 13,143.53 is: 18,161.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,457.94 : 25,505.28 = 13,143.53 : x
  2. Step 2: Convert to fraction form
    18,457.94/25,505.28 = 13,143.53/x
  3. Step 3: Cross multiply
    18,457.94x = 25,505.28 × 13,143.53
  4. Step 4: Simplify right side
    18,457.94x = 335,229,476.60
  5. Step 5: Solve for x
    x = 335,229,476.60/18,457.94
  6. Step 6: Final answer
    x = 18,161.80

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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.