Home / 21,178.04-29,229.19-11,749.64

Finding the Fourth Proportional to 21,178.04, 29,229.19 and 11,749.64

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Solution

The fourth proportional to 21,178.04, 29,229.19 and 11,749.64 is: 16,216.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,178.04 : 29,229.19 = 11,749.64 : x
  2. Step 2: Convert to fraction form
    21,178.04/29,229.19 = 11,749.64/x
  3. Step 3: Cross multiply
    21,178.04x = 29,229.19 × 11,749.64
  4. Step 4: Simplify right side
    21,178.04x = 343,432,284.47
  5. Step 5: Solve for x
    x = 343,432,284.47/21,178.04
  6. Step 6: Final answer
    x = 16,216.44

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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.