Home / 13,349.37-18,421.38-7,380.69

Finding the Fourth Proportional to 13,349.37, 18,421.38 and 7,380.69

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Solution

The fourth proportional to 13,349.37, 18,421.38 and 7,380.69 is: 10,184.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,349.37 : 18,421.38 = 7,380.69 : x
  2. Step 2: Convert to fraction form
    13,349.37/18,421.38 = 7,380.69/x
  3. Step 3: Cross multiply
    13,349.37x = 18,421.38 × 7,380.69
  4. Step 4: Simplify right side
    13,349.37x = 135,962,403.05
  5. Step 5: Solve for x
    x = 135,962,403.05/13,349.37
  6. Step 6: Final answer
    x = 10,184.93

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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.