Home / 21,676.24-29,920.98-13,178.62

Finding the Fourth Proportional to 21,676.24, 29,920.98 and 13,178.62

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Solution

The fourth proportional to 21,676.24, 29,920.98 and 13,178.62 is: 18,191.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,676.24 : 29,920.98 = 13,178.62 : x
  2. Step 2: Convert to fraction form
    21,676.24/29,920.98 = 13,178.62/x
  3. Step 3: Cross multiply
    21,676.24x = 29,920.98 × 13,178.62
  4. Step 4: Simplify right side
    21,676.24x = 394,317,225.45
  5. Step 5: Solve for x
    x = 394,317,225.45/21,676.24
  6. Step 6: Final answer
    x = 18,191.22

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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.