Home / 13,326.12-18,390.24-8,020.62

Finding the Fourth Proportional to 13,326.12, 18,390.24 and 8,020.62

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Solution

The fourth proportional to 13,326.12, 18,390.24 and 8,020.62 is: 11,068.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,326.12 : 18,390.24 = 8,020.62 : x
  2. Step 2: Convert to fraction form
    13,326.12/18,390.24 = 8,020.62/x
  3. Step 3: Cross multiply
    13,326.12x = 18,390.24 × 8,020.62
  4. Step 4: Simplify right side
    13,326.12x = 147,501,126.75
  5. Step 5: Solve for x
    x = 147,501,126.75/13,326.12
  6. Step 6: Final answer
    x = 11,068.57

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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.