Home / 15,883.35-21,918.60-9,168.75

Finding the Fourth Proportional to 15,883.35, 21,918.60 and 9,168.75

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Solution

The fourth proportional to 15,883.35, 21,918.60 and 9,168.75 is: 12,652.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,883.35 : 21,918.60 = 9,168.75 : x
  2. Step 2: Convert to fraction form
    15,883.35/21,918.60 = 9,168.75/x
  3. Step 3: Cross multiply
    15,883.35x = 21,918.60 × 9,168.75
  4. Step 4: Simplify right side
    15,883.35x = 200,966,163.75
  5. Step 5: Solve for x
    x = 200,966,163.75/15,883.35
  6. Step 6: Final answer
    x = 12,652.63

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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.