Home / 13,379.73-18,444.80-9,388.47

Finding the Fourth Proportional to 13,379.73, 18,444.80 and 9,388.47

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Solution

The fourth proportional to 13,379.73, 18,444.80 and 9,388.47 is: 12,942.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,379.73 : 18,444.80 = 9,388.47 : x
  2. Step 2: Convert to fraction form
    13,379.73/18,444.80 = 9,388.47/x
  3. Step 3: Cross multiply
    13,379.73x = 18,444.80 × 9,388.47
  4. Step 4: Simplify right side
    13,379.73x = 173,168,404.51
  5. Step 5: Solve for x
    x = 173,168,404.51/13,379.73
  6. Step 6: Final answer
    x = 12,942.59

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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.