Home / 13,631.25-18,810.19-7,663.82

Finding the Fourth Proportional to 13,631.25, 18,810.19 and 7,663.82

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Solution

The fourth proportional to 13,631.25, 18,810.19 and 7,663.82 is: 10,575.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,631.25 : 18,810.19 = 7,663.82 : x
  2. Step 2: Convert to fraction form
    13,631.25/18,810.19 = 7,663.82/x
  3. Step 3: Cross multiply
    13,631.25x = 18,810.19 × 7,663.82
  4. Step 4: Simplify right side
    13,631.25x = 144,157,910.33
  5. Step 5: Solve for x
    x = 144,157,910.33/13,631.25
  6. Step 6: Final answer
    x = 10,575.55

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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.