Home / 13,406.22-18,502.79-7,439.81

Finding the Fourth Proportional to 13,406.22, 18,502.79 and 7,439.81

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Solution

The fourth proportional to 13,406.22, 18,502.79 and 7,439.81 is: 10,268.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,406.22 : 18,502.79 = 7,439.81 : x
  2. Step 2: Convert to fraction form
    13,406.22/18,502.79 = 7,439.81/x
  3. Step 3: Cross multiply
    13,406.22x = 18,502.79 × 7,439.81
  4. Step 4: Simplify right side
    13,406.22x = 137,657,149.56
  5. Step 5: Solve for x
    x = 137,657,149.56/13,406.22
  6. Step 6: Final answer
    x = 10,268.16

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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.