Home / 13,349.68-18,421.74-7,380.99

Finding the Fourth Proportional to 13,349.68, 18,421.74 and 7,380.99

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Solution

The fourth proportional to 13,349.68, 18,421.74 and 7,380.99 is: 10,185.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,349.68 : 18,421.74 = 7,380.99 : x
  2. Step 2: Convert to fraction form
    13,349.68/18,421.74 = 7,380.99/x
  3. Step 3: Cross multiply
    13,349.68x = 18,421.74 × 7,380.99
  4. Step 4: Simplify right side
    13,349.68x = 135,970,678.72
  5. Step 5: Solve for x
    x = 135,970,678.72/13,349.68
  6. Step 6: Final answer
    x = 10,185.31

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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.