Home / 13,349.18-18,421.08-7,380.38

Finding the Fourth Proportional to 13,349.18, 18,421.08 and 7,380.38

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Solution

The fourth proportional to 13,349.18, 18,421.08 and 7,380.38 is: 10,184.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,349.18 : 18,421.08 = 7,380.38 : x
  2. Step 2: Convert to fraction form
    13,349.18/18,421.08 = 7,380.38/x
  3. Step 3: Cross multiply
    13,349.18x = 18,421.08 × 7,380.38
  4. Step 4: Simplify right side
    13,349.18x = 135,954,570.41
  5. Step 5: Solve for x
    x = 135,954,570.41/13,349.18
  6. Step 6: Final answer
    x = 10,184.49

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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.