Home / 21,187.20-29,235.03-12,232.98

Finding the Fourth Proportional to 21,187.20, 29,235.03 and 12,232.98

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Solution

The fourth proportional to 21,187.20, 29,235.03 and 12,232.98 is: 16,879.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,187.20 : 29,235.03 = 12,232.98 : x
  2. Step 2: Convert to fraction form
    21,187.20/29,235.03 = 12,232.98/x
  3. Step 3: Cross multiply
    21,187.20x = 29,235.03 × 12,232.98
  4. Step 4: Simplify right side
    21,187.20x = 357,631,537.29
  5. Step 5: Solve for x
    x = 357,631,537.29/21,187.20
  6. Step 6: Final answer
    x = 16,879.60

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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.