Home / 15,918.75-21,967.89-8,845.83

Finding the Fourth Proportional to 15,918.75, 21,967.89 and 8,845.83

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Solution

The fourth proportional to 15,918.75, 21,967.89 and 8,845.83 is: 12,207.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,918.75 : 21,967.89 = 8,845.83 : x
  2. Step 2: Convert to fraction form
    15,918.75/21,967.89 = 8,845.83/x
  3. Step 3: Cross multiply
    15,918.75x = 21,967.89 × 8,845.83
  4. Step 4: Simplify right side
    15,918.75x = 194,324,220.40
  5. Step 5: Solve for x
    x = 194,324,220.40/15,918.75
  6. Step 6: Final answer
    x = 12,207.25

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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.