Home / 21,613.75-29,826.98-11,677.75

Finding the Fourth Proportional to 21,613.75, 29,826.98 and 11,677.75

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Solution

The fourth proportional to 21,613.75, 29,826.98 and 11,677.75 is: 16,115.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,613.75 : 29,826.98 = 11,677.75 : x
  2. Step 2: Convert to fraction form
    21,613.75/29,826.98 = 11,677.75/x
  3. Step 3: Cross multiply
    21,613.75x = 29,826.98 × 11,677.75
  4. Step 4: Simplify right side
    21,613.75x = 348,312,015.70
  5. Step 5: Solve for x
    x = 348,312,015.70/21,613.75
  6. Step 6: Final answer
    x = 16,115.30

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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.