Home / 21,917.03-30,243.27-12,962.79

Finding the Fourth Proportional to 21,917.03, 30,243.27 and 12,962.79

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Solution

The fourth proportional to 21,917.03, 30,243.27 and 12,962.79 is: 17,887.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,917.03 : 30,243.27 = 12,962.79 : x
  2. Step 2: Convert to fraction form
    21,917.03/30,243.27 = 12,962.79/x
  3. Step 3: Cross multiply
    21,917.03x = 30,243.27 × 12,962.79
  4. Step 4: Simplify right side
    21,917.03x = 392,037,157.92
  5. Step 5: Solve for x
    x = 392,037,157.92/21,917.03
  6. Step 6: Final answer
    x = 17,887.33

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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.