Home / 18,703.18-25,810.37-11,988.80

Finding the Fourth Proportional to 18,703.18, 25,810.37 and 11,988.80

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Solution

The fourth proportional to 18,703.18, 25,810.37 and 11,988.80 is: 16,544.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,703.18 : 25,810.37 = 11,988.80 : x
  2. Step 2: Convert to fraction form
    18,703.18/25,810.37 = 11,988.80/x
  3. Step 3: Cross multiply
    18,703.18x = 25,810.37 × 11,988.80
  4. Step 4: Simplify right side
    18,703.18x = 309,435,456.64
  5. Step 5: Solve for x
    x = 309,435,456.64/18,703.18
  6. Step 6: Final answer
    x = 16,544.54

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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.