Home / 13,381.28-18,466.19-7,412.82

Finding the Fourth Proportional to 13,381.28, 18,466.19 and 7,412.82

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Solution

The fourth proportional to 13,381.28, 18,466.19 and 7,412.82 is: 10,229.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,381.28 : 18,466.19 = 7,412.82 : x
  2. Step 2: Convert to fraction form
    13,381.28/18,466.19 = 7,412.82/x
  3. Step 3: Cross multiply
    13,381.28x = 18,466.19 × 7,412.82
  4. Step 4: Simplify right side
    13,381.28x = 136,886,505.49
  5. Step 5: Solve for x
    x = 136,886,505.49/13,381.28
  6. Step 6: Final answer
    x = 10,229.71

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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.