Home / 13,349.18-18,421.05-7,380.49

Finding the Fourth Proportional to 13,349.18, 18,421.05 and 7,380.49

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Solution

The fourth proportional to 13,349.18, 18,421.05 and 7,380.49 is: 10,184.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,349.18 : 18,421.05 = 7,380.49 : x
  2. Step 2: Convert to fraction form
    13,349.18/18,421.05 = 7,380.49/x
  3. Step 3: Cross multiply
    13,349.18x = 18,421.05 × 7,380.49
  4. Step 4: Simplify right side
    13,349.18x = 135,956,375.31
  5. Step 5: Solve for x
    x = 135,956,375.31/13,349.18
  6. Step 6: Final answer
    x = 10,184.62

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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.