Home / 13,446.12-18,555.24-7,477.56

Finding the Fourth Proportional to 13,446.12, 18,555.24 and 7,477.56

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Solution

The fourth proportional to 13,446.12, 18,555.24 and 7,477.56 is: 10,318.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,446.12 : 18,555.24 = 7,477.56 : x
  2. Step 2: Convert to fraction form
    13,446.12/18,555.24 = 7,477.56/x
  3. Step 3: Cross multiply
    13,446.12x = 18,555.24 × 7,477.56
  4. Step 4: Simplify right side
    13,446.12x = 138,747,920.41
  5. Step 5: Solve for x
    x = 138,747,920.41/13,446.12
  6. Step 6: Final answer
    x = 10,318.81

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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.