Home / 21,027.90-31,562.61-11,167.15

Finding the Fourth Proportional to 21,027.90, 31,562.61 and 11,167.15

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Solution

The fourth proportional to 21,027.90, 31,562.61 and 11,167.15 is: 16,761.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,027.90 : 31,562.61 = 11,167.15 : x
  2. Step 2: Convert to fraction form
    21,027.90/31,562.61 = 11,167.15/x
  3. Step 3: Cross multiply
    21,027.90x = 31,562.61 × 11,167.15
  4. Step 4: Simplify right side
    21,027.90x = 352,464,400.26
  5. Step 5: Solve for x
    x = 352,464,400.26/21,027.90
  6. Step 6: Final answer
    x = 16,761.75

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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.