Home / 21,649.08-29,876.33-12,218.25

Finding the Fourth Proportional to 21,649.08, 29,876.33 and 12,218.25

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Solution

The fourth proportional to 21,649.08, 29,876.33 and 12,218.25 is: 16,861.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,649.08 : 29,876.33 = 12,218.25 : x
  2. Step 2: Convert to fraction form
    21,649.08/29,876.33 = 12,218.25/x
  3. Step 3: Cross multiply
    21,649.08x = 29,876.33 × 12,218.25
  4. Step 4: Simplify right side
    21,649.08x = 365,036,499.57
  5. Step 5: Solve for x
    x = 365,036,499.57/21,649.08
  6. Step 6: Final answer
    x = 16,861.52

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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.