Home / 13,318.63-18,379.64-7,350.24

Finding the Fourth Proportional to 13,318.63, 18,379.64 and 7,350.24

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Solution

The fourth proportional to 13,318.63, 18,379.64 and 7,350.24 is: 10,143.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,318.63 : 18,379.64 = 7,350.24 : x
  2. Step 2: Convert to fraction form
    13,318.63/18,379.64 = 7,350.24/x
  3. Step 3: Cross multiply
    13,318.63x = 18,379.64 × 7,350.24
  4. Step 4: Simplify right side
    13,318.63x = 135,094,852.41
  5. Step 5: Solve for x
    x = 135,094,852.41/13,318.63
  6. Step 6: Final answer
    x = 10,143.30

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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.