Home / 21,178.97-29,226.98-11,749.35

Finding the Fourth Proportional to 21,178.97, 29,226.98 and 11,749.35

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Solution

The fourth proportional to 21,178.97, 29,226.98 and 11,749.35 is: 16,214.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,178.97 : 29,226.98 = 11,749.35 : x
  2. Step 2: Convert to fraction form
    21,178.97/29,226.98 = 11,749.35/x
  3. Step 3: Cross multiply
    21,178.97x = 29,226.98 × 11,749.35
  4. Step 4: Simplify right side
    21,178.97x = 343,398,090.35
  5. Step 5: Solve for x
    x = 343,398,090.35/21,178.97
  6. Step 6: Final answer
    x = 16,214.11

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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.