Home / 13,631.49-18,808.59-8,039.25

Finding the Fourth Proportional to 13,631.49, 18,808.59 and 8,039.25

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Solution

The fourth proportional to 13,631.49, 18,808.59 and 8,039.25 is: 11,092.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,631.49 : 18,808.59 = 8,039.25 : x
  2. Step 2: Convert to fraction form
    13,631.49/18,808.59 = 8,039.25/x
  3. Step 3: Cross multiply
    13,631.49x = 18,808.59 × 8,039.25
  4. Step 4: Simplify right side
    13,631.49x = 151,206,957.16
  5. Step 5: Solve for x
    x = 151,206,957.16/13,631.49
  6. Step 6: Final answer
    x = 11,092.47

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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.