Home / 21,188.97-29,240.65-12,237.25

Finding the Fourth Proportional to 21,188.97, 29,240.65 and 12,237.25

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Solution

The fourth proportional to 21,188.97, 29,240.65 and 12,237.25 is: 16,887.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,188.97 : 29,240.65 = 12,237.25 : x
  2. Step 2: Convert to fraction form
    21,188.97/29,240.65 = 12,237.25/x
  3. Step 3: Cross multiply
    21,188.97x = 29,240.65 × 12,237.25
  4. Step 4: Simplify right side
    21,188.97x = 357,825,144.21
  5. Step 5: Solve for x
    x = 357,825,144.21/21,188.97
  6. Step 6: Final answer
    x = 16,887.33

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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.