Home / 13,349.98-18,421.36-7,380.83

Finding the Fourth Proportional to 13,349.98, 18,421.36 and 7,380.83

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Solution

The fourth proportional to 13,349.98, 18,421.36 and 7,380.83 is: 10,184.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,349.98 : 18,421.36 = 7,380.83 : x
  2. Step 2: Convert to fraction form
    13,349.98/18,421.36 = 7,380.83/x
  3. Step 3: Cross multiply
    13,349.98x = 18,421.36 × 7,380.83
  4. Step 4: Simplify right side
    13,349.98x = 135,964,926.53
  5. Step 5: Solve for x
    x = 135,964,926.53/13,349.98
  6. Step 6: Final answer
    x = 10,184.65

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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.