Home / 21,027.40-31,502.70-17,110.60

Finding the Fourth Proportional to 21,027.40, 31,502.70 and 17,110.60

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Solution

The fourth proportional to 21,027.40, 31,502.70 and 17,110.60 is: 25,634.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,027.40 : 31,502.70 = 17,110.60 : x
  2. Step 2: Convert to fraction form
    21,027.40/31,502.70 = 17,110.60/x
  3. Step 3: Cross multiply
    21,027.40x = 31,502.70 × 17,110.60
  4. Step 4: Simplify right side
    21,027.40x = 539,030,098.62
  5. Step 5: Solve for x
    x = 539,030,098.62/21,027.40
  6. Step 6: Final answer
    x = 25,634.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.