Home / 13,318.12-18,379.08-7,349.77

Finding the Fourth Proportional to 13,318.12, 18,379.08 and 7,349.77

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Solution

The fourth proportional to 13,318.12, 18,379.08 and 7,349.77 is: 10,142.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,318.12 : 18,379.08 = 7,349.77 : x
  2. Step 2: Convert to fraction form
    13,318.12/18,379.08 = 7,349.77/x
  3. Step 3: Cross multiply
    13,318.12x = 18,379.08 × 7,349.77
  4. Step 4: Simplify right side
    13,318.12x = 135,082,010.81
  5. Step 5: Solve for x
    x = 135,082,010.81/13,318.12
  6. Step 6: Final answer
    x = 10,142.72

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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.