Home / 18,405.90-25,387.70-11,336.49

Finding the Fourth Proportional to 18,405.90, 25,387.70 and 11,336.49

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Solution

The fourth proportional to 18,405.90, 25,387.70 and 11,336.49 is: 15,636.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,405.90 : 25,387.70 = 11,336.49 : x
  2. Step 2: Convert to fraction form
    18,405.90/25,387.70 = 11,336.49/x
  3. Step 3: Cross multiply
    18,405.90x = 25,387.70 × 11,336.49
  4. Step 4: Simplify right side
    18,405.90x = 287,807,350.49
  5. Step 5: Solve for x
    x = 287,807,350.49/18,405.90
  6. Step 6: Final answer
    x = 15,636.69

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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.