Home / 21,187.97-29,239.27-12,236.25

Finding the Fourth Proportional to 21,187.97, 29,239.27 and 12,236.25

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Solution

The fourth proportional to 21,187.97, 29,239.27 and 12,236.25 is: 16,885.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,187.97 : 29,239.27 = 12,236.25 : x
  2. Step 2: Convert to fraction form
    21,187.97/29,239.27 = 12,236.25/x
  3. Step 3: Cross multiply
    21,187.97x = 29,239.27 × 12,236.25
  4. Step 4: Simplify right side
    21,187.97x = 357,779,017.54
  5. Step 5: Solve for x
    x = 357,779,017.54/21,187.97
  6. Step 6: Final answer
    x = 16,885.95

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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.