Home / 13,447.19-18,555.71-7,477.90

Finding the Fourth Proportional to 13,447.19, 18,555.71 and 7,477.90

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Solution

The fourth proportional to 13,447.19, 18,555.71 and 7,477.90 is: 10,318.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,447.19 : 18,555.71 = 7,477.90 : x
  2. Step 2: Convert to fraction form
    13,447.19/18,555.71 = 7,477.90/x
  3. Step 3: Cross multiply
    13,447.19x = 18,555.71 × 7,477.90
  4. Step 4: Simplify right side
    13,447.19x = 138,757,660.03
  5. Step 5: Solve for x
    x = 138,757,660.03/13,447.19
  6. Step 6: Final answer
    x = 10,318.71

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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.